5307 KUHL Men's Reactiv Lite Grid Bottom The REACTIV Lit Grid Bottom features graphene-infused fabric that quickly retains or expels heat as your body demands — lighter weight, better breathabilty, and more precise temperature regulation. Grid patterning promotes air circulation, wicks moisture, and improves compressibility. Soft, next-to-skin comfort with built-in odor resistance and a fit built for bodies in motion. NEVER SETTLE. Fitted Premium graphene-infused fleece fabric from Italy Graphene has superior heat dispersion technology that expels heat in warm weather and preserves body heat in the cold Odor resistance that never washes out means less washing and more wearing Grid pattern on fabric interior promotes air circulation Lightweight | 140 GSM Breathable Moisture wicking Soft and comfortable interior 3D articulated patterning for ease of movement Form-fitting design makes it perfect for layering Constructed with 2 different fabrics for the ultimate in temperature regulation 32" inseam Approximate Garment Weight: 160 G | 5.6 oz Fabric 100% Polyester | 140 GSM Product Care Machine wash cold, delicate cycle Do not bleach Tumble dry low