Spatzwear Basez Extreme Long Sleeve Baselayer Black in color Designed with one simple brief: create the warmest, most comfortable, quickest-drying, and best-designed winter base layer available. The Basez Extreme surpasses its predecessor, the award-winning Basez2, offering a whole new level of warmth and protection for the coldest conditions.

Advanced Insulation: Polypropylene yarn traps warm air against your skin, maintaining optimal temperature during intense activity.
Seamless Construction: Engineered for maximum comfort, with inside weaves and waffles that actively pull moisture away to keep you dry.
Wind-Stopper Technology: A breathable membrane across the chest provides a barrier against cold winds, keeping warmth locked in.
Tested in Extreme Conditions: After four winters of testing in the UK, Alps, and Pyrenees, the Basez Extreme has been shown to outperform multiple base layers, offering superior warmth and protection.
Ergonomic Fit: Long arms, a dropped rear, short front, and high neck design provide a close, unrestricted fit that works perfectly with outer layers.

Features
• Advanced insulation: polypropylene yarn traps warm air against the skin
• Seamless construction with internal weaves and waffles to move moisture away
• Breathable wind-stopping chest membrane to block cold air
• Tested over four winters in the UK, Alps and Pyrenees
• Long arms, dropped rear, short front and high neck for an ergonomic cycling fit

Specifications
Material construction:Polypropylene yarn with seamless manufacture and internal weave/waffle structure
Thermal function:Traps warm air next to the skin and maintains optimal temperature in cold conditions
Moisture management:Inside weaves and waffles actively pull sweat away from the body
Wind protection:Breathable membrane panel across the chest
Fit profile:Long arms, dropped rear, short front, high neck, close but unrestricted cycling fit
Testing:Proven over four winters in the UK, Alps and Pyrenees
Use case:Deep-winter base layer for the coldest riding conditions