Louis Garneau - Tri Power Lazer Triathlon Bike Shorts The Tri Air chamois is quick drying, breathable, and provides support during your bike ride while maintaining comfort during your run and swim. The compressive fabric provides maximum support for muscles while the Coldblack treatment reflects UV rays for cooling. The adjustable elastic waist drawstring keeps the garment in place during activity. The single-layer, laser-cut bottom and crotch construction help eliminate irritation and saddle bunching. Reflective accents provide greater visibility.