Quiksilver Wetsuits - Quiksilver Syncro 2mm Back Zip Shorty Wetsuit - Graphite/ Blue/ Yellow :: Boy > Wetsuits. Bio-fleece Thermal Neoprene: With warm. light . quick-drying jersey liningFN Lite Neoprene: Packed with air cells to offer supreme warmth without\n being heavyGlued and Blind-Stitched Seams: Minimises water entry. reinforced with\n the Hydrolock seam technologyWaterproof Hydrolock seam technology: Eliminating any water entering the\n suit through seamsYKK back-zip: Durable and hardwearingKids's wetsuitThickness: 2/2mmIconic Quiksilver brandingInternal key pocket: Secure and safeGlideskin neck seal: Super-smooth and waterproofBeadlock seals: Silicone beads to prevent water build-upEcto-flex knee reinforcement: Extremely comfortable and offering huge\n amounts of durability Size: 11-12 YRS.