Kids 4/3mm Back Zip Full Wetsuit in Faint Blue / Lime * Plush Thermolite Upper Body = Fast Drying, Increased Warmth, Light, Stretchy * Superprene Japanese Limestone = Uber Soft, Lightweight * Watertight Back Zip Entry = Keeps Water Out * Engineered Fit = Fits Like a Secondary Skin * Triple Glued With Blind Stitched Seams = Seam Protection * Water-Based Glue & Dope-Dye Yarn = More Eco-friendly This Kids 5/4mm Axis Back Zip Wetsuit incorporates some of Xcel’s highest quality materials, such as their Superprene Japanese Limestone and a quick-drying Plush Thermolite Lining on the upper body. Both of these materials offer ultra-soft comfort and stretch while ensuring great quality warmth. The Triple Glued & Blind Stitched Seams with the Reinforced Fusion X Tape offer good seam durability and protection, all while utilizing more environmentally friendly materials than petroleum-based