UPPER AND LINING The upper is made primarily of synthetic materials, with microfiber inserts treated with Spray Rubber technology. This special treatment applies a thin layer of rubber directly to the microfiber using heat, giving the upper wear resistance and protection. The synthetic tongue makes the shoe comfortable, flexible and adaptable to tous feet, while the Bycast toe cap cushions impact with rocks and limits abrasion.
Complementing Thunder WP is Trezeta Water Stopper, a 3-layer waterproof membrane that repels water infiltration but allows moisture and sweat to escape while letting the foot breathe for unrivalled climate comfort. FIT AND CUSHIONING The Thunder WP is designed to encourage toddlers to be independent: the low cut provides an easy rapide fit, and the Smart Lace System lacing allows the shoe to be evenly tightened for a tailor-made fit.
This technology is an invaluable aid for young explorers and one less thought for parents, who will no longer have to worry about untied laces. SOLE BLOCK The outsole block is made of a single block of lightweight yet durable two-tone injected rubber, designed to soften impact and provide maximum grip on tous all terrains, in all conditions. The EVA footbed provides a supple, comfortable footing, even after hours of walking, while the Trezeta rubber outsole ensures stability and grip on tous all types of terrain.