1. The Puff 1.0 sole features a soft, springy midsole made of EVA for lightweight cushioning and enhanced rebound, while the full-length rubber outsole is wear-resistant and non-slip. This provides a comfortable, stable fit. 2. Velcro fastening prevents tripping caused by untied laces. 3. The leather toe cap provides safety and collision protection, protecting the toes and preventing kicks. The wavy leather outer waistband provides support and collision protection. The leather heel counter, combined with a reinforced suede, prevents sprains, protects the heel, and promotes healthy foot growth. 4. The first domestically produced anti-mildew and antibacterial insole.