Smartwool W Classic Thermal Merino Base Layer Crew size-300ml It is the perfect fluid

It is the perfect fluid dispenser for long mountain runs and tours

it delivers a full edge arc and plenty of float to harness gravity's pull in all conditions

was built for jumps

You can also easily control helmet ventilation for optimum comfort across a range of weather conditions

made of cotton and polyester

Smartwool W Classic Thermal Merino Base Layer Crew size-300ml It is the perfect fluidMeet the new and improved W Classic Thermal Merino Base Layer Crew. We've updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of our best base layers for cold weather to your winter wardrobe and experience the difference the next time you