- Durable construction: decompression strap cushion made with high-quality TPU and polyurethane fiber for long-lasting durability. - Effective pressure relief: surface convection chamber creates multiple air flows to distribute load and greatly reduce shoulder pressure during use. - Secure and easy to install: D buckles stay firmly in place, allowing quick installation and reliable, long-lasting performance. - Wide compatibility and use: suitable for mountaineering, camping, hiking, and weight-bearing walking; compatible with all kinds of backpacks. - Comfort-enhancing materials: covered with far-infrared ceramic powder to relieve shoulder pressure. 2-3 practical use scenarios - Weekend mountaineering with a heavy pack: reduces shoulder fatigue over long ascents, improving comfort on steep sections. - Multi-day camping trips: helps distribute weight more evenly when carrying tent, stove, and gear for extended distances. - Long hiking or weight-bearing walks: enhances comfort on uneven terrain and extended treks with varying loads. Key attributes - Function: decompression and pressure relief for shoulder comfort - Material: TPU and polyurethane fiber for durability - Surface feature: convection chamber for improved pressure distribution - Fastening: secure D buckles for easy, lasting installation - Comfort enhancement: far-infrared ceramic powder lining - Compatibility: works with all kinds of backpacks