Quiksilver Wetsuits - Quiksilver Syncro 4/3mm Back Zip Wetsuit - Black/ Blue/ Yellow :: Boy > Wetsuits. Fit: Long-sleeved fullsuitThickness: 3/2mmGlideskin neck seal: Super-smooth and waterproofBio-fleece Thermal Neoprene: With warm. light . quick-drying jersey liningIconic Quiksilver brandingYKK back-zip: Durable and hardwearing offering easy entrance and exitGlued and Blind-Stitched Seams: Minimises water entryKnee reinforcement: Ecto-flexFlush Lock Seals: Prevent water flushing through the wrists & anklesKids's wetsuitMaterials: 92% Nylon/Polyamide. 8% ElastaneFN Lite Neoprene: Packed with air cells to offer supreme warmth without being heavy Size: 03-4 YRS.