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Product Description
Yamato Michi Chemical B Pocket T-Shirt (Unisex)
■Excerpt from the manufacturer's description
*Please note
〇 Differences in Characteristics by Color
Due to differences in dye concentration, there are variations in the functional properties achieved through processing; while the fabric strength of the off-white version is slightly lower than that of other colors, its antimicrobial performance tends to be relatively higher.
Due to the fabric's natural mottled texture, the same color may appear slightly different in shade.
〇 About Odor Absorption
There have been reports of people noticing odors, such as body odor, when wearing items previously worn by others. It is possible that the body odor of someone else—to which the wearer is not accustomed—adhered to the fabric, causing a particularly noticeable sensation. There have also been reports of people detecting the smell of algae after wading in rivers or streams.
In the following situations, Chemical B may not be able to fully demonstrate its antibacterial, deodorizing, and odor-eliminating properties.
・When excess sebum builds up
・When the pH level of sweat is high after sweating
・If alkaline detergents or chemicals remain
・When acidic odor-causing compounds (e.g., butyric acid, isovaleric acid, etc.—so-called body odor originating from skin flora) increase due to factors such as leaving wet clothes unattended
〇Regarding Stitch Marks at Seam Lines
Due to the nature of the fabric, stitch marks tend to remain visible after sewing, and small pinholes may appear if you pull on the sewn areas. While this does not affect normal use or wear, please avoid pulling on these areas too hard.
A comfortable synthetic base layer that lasts for days
The Chemical B base layer series, developed in collaboration with Teijin Frontier, eliminates the problems of "chills from sweat" and "odor"—long-standing weaknesses of synthetic base layers.
It quickly wicks away sweat and dries, while its fabric structure—which makes contact with the skin only at specific points—helps prevent chills caused by sweat. Furthermore, the mildly acidic yarn inhibits bacterial growth, preventing unpleasant odors. The result is a base layer that perfectly combines the best features of synthetic fibers and merino wool.
With its simple, wide-fit design and comfortable, breathable feel against the skin, this base layer is perfect for active hikers—especially those who have previously avoided synthetic fabrics.
・Excellent at wicking away sweat, keeping you comfortable even during prolonged, high-intensity activity
・Although it is a synthetic fiber, it offers excellent odor-preventing and odor-eliminating properties, and the effects last
・Lighter than merino wool
・Despite being made of a lightweight mesh fabric, it is durable and resistant to pilling
■Features and Design
• Relieve the discomfort of sweating and chills caused by sweat
Chemical B features a fabric structure that makes point-to-point contact with the skin, quickly absorbing sweat and drawing it up to the fabric surface like a sponge, where it is efficiently diffused and evaporated through a highly breathable mesh layer. Thanks to its superior breathability and quick-drying properties, it stays non-sticky even when you sweat, minimizes moisture buildup, and keeps your skin dry at all times for lasting comfort.
Because it wicks away sweat quickly and minimizes moisture buildup, it reduces the chilling sensation often associated with synthetic base layers, allowing you to wear it with confidence even when stationary or in inclement weather.
〇 It doesn't smell, even though it's synthetic
While synthetic base layers excel in quick-drying and moisture-wicking performance, they have the drawback of being prone to odor when sweaty. Although various manufacturers produce products with antimicrobial, odor-resistant, and deodorizing treatments, nothing can match the natural odor-neutralizing properties of merino wool—and that is one of the reasons Yama to Michi has remained committed to using merino wool.
To address this, Yamato-Michio collaborated with Teijin Frontier to develop a synthetic fabric designed to provide a high level of odor control. By using mildly acidic yarns that inhibit the growth of odor-causing bacteria, combined with a quick-drying fabric structure, they have created a system that makes it difficult for bacteria to multiply.
• A wide fit that isn’t too sporty
While most synthetic base layers feature a snug, sporty fit designed for performance, the Chemical B Pocket T-shirt adopts a simple, loose-fitting design. Combined with its voluminous texture, this creates a synthetic base layer that isn’t overly sporty and is suitable for a variety of occasions.
■Material：100% Recycled Polyester, 100g/m
■Weight：
・78 g (Size XS)
・91 g (Size S)
・97 g (Size M)
・108 g (Size L)
・115 g (Size XL)
■Product Dimensions (cm) *From the manufacturer's website
[ XS ] Length: 61, Shoulder width: 38, Body width: 47.5, Hem width: 46.5, Sleeve length: 19.5, Cuff width: 16
[ S ] Length: 64.5, Shoulder width: 41, Body width: 52.5, Hem width: 51.5, Sleeve length: 21, Cuff width: 17
[ M ] Length: 67.5, Shoulder width: 43, Body width: 55, Hem width: 54, Sleeve length: 22, Cuff width: 17.5
[ L ] Length: 69.5, Shoulder width: 46, Body width: 59, Hem width: 58, Sleeve length: 23, Cuff width: 18.5
[ XL ] Length: 71.5, Shoulder width: 48, Chest width: 62, Hem width: 51, Sleeve length: 24, Cuff width: 19
*Please note that actual measurements may differ from those listed due to fabric stretch or sewing tolerances.
*Please note that the fabric may shrink with wear and washing, so the measurements may change over time.
■ Product Care
・Please wash using a mild detergent in water no hotter than 40°C.
・Please hang to dry in the shade.
・Do not use a dryer or iron, as heat will weaken the antibacterial and odor-resistant properties.
・To maintain the fabric’s antibacterial and odor-resistant properties, please avoid dry cleaning, fabric softeners, and bleach.
*Please note that the images shown are provided by the manufacturer, so the actual product may differ slightly in terms of specifications (such as logo placement, color, or pattern placement).
■Excerpt from the manufacturer's description
*Please note
〇 Differences in Characteristics by Color
Due to differences in dye concentration, there are variations in the functional properties achieved through processing; while the fabric strength of the off-white version is slightly lower than that of other colors, its antimicrobial performance tends to be relatively higher.
Due to the fabric's natural mottled texture, the same color may appear slightly different in shade.
〇 About Odor Absorption
There have been reports of people noticing odors, such as body odor, when wearing items previously worn by others. It is possible that the body odor of someone else—to which the wearer is not accustomed—adhered to the fabric, causing a particularly noticeable sensation. There have also been reports of people detecting the smell of algae after wading in rivers or streams.
In the following situations, Chemical B may not be able to fully demonstrate its antibacterial, deodorizing, and odor-eliminating properties.
・When excess sebum builds up
・When the pH level of sweat is high after sweating
・If alkaline detergents or chemicals remain
・When acidic odor-causing compounds (e.g., butyric acid, isovaleric acid, etc.—so-called body odor originating from skin flora) increase due to factors such as leaving wet clothes unattended
〇Regarding Stitch Marks at Seam Lines
Due to the nature of the fabric, stitch marks tend to remain visible after sewing, and small pinholes may appear if you pull on the sewn areas. While this does not affect normal use or wear, please avoid pulling on these areas too hard.
A comfortable synthetic base layer that lasts for days
The Chemical B base layer series, developed in collaboration with Teijin Frontier, eliminates the problems of "chills from sweat" and "odor"—long-standing weaknesses of synthetic base layers.
It quickly wicks away sweat and dries, while its fabric structure—which makes contact with the skin only at specific points—helps prevent chills caused by sweat. Furthermore, the mildly acidic yarn inhibits bacterial growth, preventing unpleasant odors. The result is a base layer that perfectly combines the best features of synthetic fibers and merino wool.
With its simple, wide-fit design and comfortable, breathable feel against the skin, this base layer is perfect for active hikers—especially those who have previously avoided synthetic fabrics.
・Excellent at wicking away sweat, keeping you comfortable even during prolonged, high-intensity activity
・Although it is a synthetic fiber, it offers excellent odor-preventing and odor-eliminating properties, and the effects last
・Lighter than merino wool
・Despite being made of a lightweight mesh fabric, it is durable and resistant to pilling
■Features and Design
• Relieve the discomfort of sweating and chills caused by sweat
Chemical B features a fabric structure that makes point-to-point contact with the skin, quickly absorbing sweat and drawing it up to the fabric surface like a sponge, where it is efficiently diffused and evaporated through a highly breathable mesh layer. Thanks to its superior breathability and quick-drying properties, it stays non-sticky even when you sweat, minimizes moisture buildup, and keeps your skin dry at all times for lasting comfort.
Because it wicks away sweat quickly and minimizes moisture buildup, it reduces the chilling sensation often associated with synthetic base layers, allowing you to wear it with confidence even when stationary or in inclement weather.
〇 It doesn't smell, even though it's synthetic
While synthetic base layers excel in quick-drying and moisture-wicking performance, they have the drawback of being prone to odor when sweaty. Although various manufacturers produce products with antimicrobial, odor-resistant, and deodorizing treatments, nothing can match the natural odor-neutralizing properties of merino wool—and that is one of the reasons Yama to Michi has remained committed to using merino wool.
To address this, Yamato-Michio collaborated with Teijin Frontier to develop a synthetic fabric designed to provide a high level of odor control. By using mildly acidic yarns that inhibit the growth of odor-causing bacteria, combined with a quick-drying fabric structure, they have created a system that makes it difficult for bacteria to multiply.
• A wide fit that isn’t too sporty
While most synthetic base layers feature a snug, sporty fit designed for performance, the Chemical B Pocket T-shirt adopts a simple, loose-fitting design. Combined with its voluminous texture, this creates a synthetic base layer that isn’t overly sporty and is suitable for a variety of occasions.
■Material：100% Recycled Polyester, 100g/m
■Weight：
・78 g (Size XS)
・91 g (Size S)
・97 g (Size M)
・108 g (Size L)
・115 g (Size XL)
■Product Dimensions (cm) *From the manufacturer's website
[ XS ] Length: 61, Shoulder width: 38, Body width: 47.5, Hem width: 46.5, Sleeve length: 19.5, Cuff width: 16
[ S ] Length: 64.5, Shoulder width: 41, Body width: 52.5, Hem width: 51.5, Sleeve length: 21, Cuff width: 17
[ M ] Length: 67.5, Shoulder width: 43, Body width: 55, Hem width: 54, Sleeve length: 22, Cuff width: 17.5
[ L ] Length: 69.5, Shoulder width: 46, Body width: 59, Hem width: 58, Sleeve length: 23, Cuff width: 18.5
[ XL ] Length: 71.5, Shoulder width: 48, Chest width: 62, Hem width: 51, Sleeve length: 24, Cuff width: 19
*Please note that actual measurements may differ from those listed due to fabric stretch or sewing tolerances.
*Please note that the fabric may shrink with wear and washing, so the measurements may change over time.
■ Product Care
・Please wash using a mild detergent in water no hotter than 40°C.
・Please hang to dry in the shade.
・Do not use a dryer or iron, as heat will weaken the antibacterial and odor-resistant properties.
・To maintain the fabric’s antibacterial and odor-resistant properties, please avoid dry cleaning, fabric softeners, and bleach.
*Please note that the images shown are provided by the manufacturer, so the actual product may differ slightly in terms of specifications (such as logo placement, color, or pattern placement).
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Cancellations, Returns, and Exchanges
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Please place your order after understanding and agreeing to the following points.
・Depending on the device or environment you are using, the color and texture of the product may appear slightly different.
・There may be slight variations in the dimensions listed in the product description.
・Minor scratches or scuffs may occur unavoidably during the manufacturing process.
・Depending on the material of the product, there may be variations in color, texture, or pattern from item to item.
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Please note that we cannot accept returns or exchanges if any of the following conditions apply. We appreciate your understanding.
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Important Notes
*Please note that inventory for this item is shared across our physical stores and other shopping sites operated by our company. We check inventory after receiving your order, so the item may be out of stock in some cases. We apologize for any inconvenience this may cause and will notify you via email if this occurs. Thank you for your understanding.
