Oboz Men's O Fit Plus II Thermal All Purpose Insoles - The O FIT Insole Plus II Thermal features all the same updates as the O FIT Insole Plus II (Cleansport NXT odor control, cushioning pods updated with Poron Vive for fatigue mitigation, as well as Adaptive Cushioning Technology in the forefoot) with the addition of a Mylar bottom coating to reflect the heat from your feet. Pop a pair into your favorite footwear and feel the warmth and comfort. Sizing: XXS (W5.5-6.5); XS (W7-8); S (W8.5-9.5/M7-8); M (W10-11/M8.5-9.5); L (W11.5-12.5/M10-11); XL (M11.5-12.5); XXL (M13-14) PORON forefoot and heel cushioning pods provide long-lasting cushioning, shock absorption and energy return ACT (Active Cushioning Technology) open cell PU cushioning, blended with NANO bamboo charcoal and green tea powder throughout, offers underfoot support Cleansport NXT - Natural odor control technology top sheet keep insoles fresh longer Deep high-denstiy EVA heel cup made from bio-based carbon provides support and improves natural cushioning High-density EVA sculpted arch made from bio-based carbon provides superior foot support and stability with the goal of placing the foot in the neutral position Mylar heat-reflecting layer helps retain heat Style: 100005