









The HEAT 1/4 ZIP TOP features revolutionary heat-activating yarn to keep you warm in all conditions. With moisture-wicking technology, quick-dry fabric and zero-static cling, BIO-HEAT X is the ultimate next-to-skin base layer for training in cold climates.
STAY WARM
Revolutionary ceramic-infused BIO-HEAT X fabric warms up with you to combat the cold.
STAY DRY
BIO-HEAT X fabric wicks sweat from the skin’s surface to keep you dry, with zero static cling.
BE SEEN
High-quality reflective trims provide visibility in low-light conditions.
NO SMELL
Antibacterial technology embedded at the yarn level works to keep you fresh and odour free.
Revolutionary BIO-HEAT X fabric keeps you warm in all conditions
BIO-HEAT X fabric wicks sweat away from the skin's surface
1/4 zip design lets you customise coverage and air flow
Reflectivity trims provide visibility in low-light conditions
Zero static cling
Thumbhole cuffs help keep your hands warm
Standard Delivery Service - £4.99
This is a flat charge for an unlimited number of items.
To see postage options for your destination please choose your shipping country at the top of the page.
If for any reason you are not satisfied with your purchase from TRI UK, you may return the product(s) to us within 28 days of the purchase date for a refund or exchange.
Find out more about returning products
The HEAT 1/4 ZIP TOP features revolutionary heat-activating yarn to keep you warm in all conditions. With moisture-wicking technology, quick-dry fabric and zero-static cling, BIO-HEAT X is the ultimate next-to-skin base layer for training in cold climates.
STAY WARM
Revolutionary ceramic-infused BIO-HEAT X fabric warms up with you to combat the cold.
STAY DRY
BIO-HEAT X fabric wicks sweat from the skin’s surface to keep you dry, with zero static cling.
BE SEEN
High-quality reflective trims provide visibility in low-light conditions.
NO SMELL
Antibacterial technology embedded at the yarn level works to keep you fresh and odour free.
Revolutionary BIO-HEAT X fabric keeps you warm in all conditions
BIO-HEAT X fabric wicks sweat away from the skin's surface
1/4 zip design lets you customise coverage and air flow
Reflectivity trims provide visibility in low-light conditions
Zero static cling
Thumbhole cuffs help keep your hands warm
Standard Delivery Service - £4.99
This is a flat charge for an unlimited number of items.
To see postage options for your destination please choose your shipping country at the top of the page.
If for any reason you are not satisfied with your purchase from TRI UK, you may return the product(s) to us within 28 days of the purchase date for a refund or exchange.
Find out more about returning products