This item was purchased this year but is new and unused due to a canceled mountain climbing trip. It has been opened. Designed for wear in extremely cold environments, it prioritizes heat retention. This thick yet highly stretchable underwear offers a great fit. It features a box construction with a smooth outer layer and a soft inner layer connected by partitions. The fluffy air layer holds plenty of dead air (non-moving air as an insulation layer), preventing warmth from escaping and achieving high heat retention. The smooth surface and excellent stretchability make layering easy. 【Material】Geoline® [100% Polyester] 【Retail Price】6,050 yen (tax included) 【Average Weight】215g 【Color】Black (BK) 【Size】L 【Features】Spiral Slantec® cuffs / Flat Seam / Long Tail Design 【Best Uses】Snow Sports / Polar Expeditions / Winter Mountaineering Gender: Men's Features: Heat Retention/Cold Protection