PU Cloud二代 insoles feature ultra-soft, high-rebound PU foam with a unique cloud-like honeycomb structure for superior shock absorption and breathability. The top layer is made of breathable mesh fabric (black version) or smooth PU foam (white version), while the midsole incorporates perforated ventilation channels to enhance airflow and moisture-wicking—ideal for reducing foot sweat during extended wear. A finger-press demonstration shows excellent elasticity and quick rebound, confirming its 'comfortable, soft, elastic, breathable, sweat-absorbing' claims. The contoured arch support and heel cup provide ergonomic stability without bulk, making them suitable for sneakers, dress shoes, or work footwear. Stackable white units highlight modular design for customizable cushioning levels. Perfect for daily commuting, office wear, walking, or light sports activities where all-day comfort is essential. Non-slip backing ensures secure fit inside shoes. Easy to trim for universal sizing.