Syncro 1mm Long Sleeve Jacket for Boys from Quiksilver. Special features include fit: long sleeve, entry: pullover, thickness: 1.5mm, F'N Lite neoprene: 16% lighter this neoprene is packed with air cells for the lightest of lightweight warmth, super-resistant flatlock seams, stitched close together for a flexible, soft & durable seam and a composition of 92% Nylon/Polyamide, 8% Elastane.