The Epic Series has many of the same ground breaking features as other O'Neill wetsuits including 100% Ultraflex neoprene double seal neck closure LSD (lumbar seamless design) and re-engineered covert blackout zip. :: Boy > Wetsuits. Glued & Blindstitched Seam Construction: Glued and blind stitched construction\n provides a waterproof seam and is also tapExternal Key pocket with loop: Located along the lower leg inseam. it\n has been constructed with Fluid Seam WeldCovert blackout zip: For super easy entrance/exitGBS seams are also taped in all areas of excessive stress for great durability100% UltraFlex DS neoprene: High-performance super-stretch neoprene with\n a durable outer skin that resists velcro pullsStrategic seamless paddle zones: An ergonomic. seamless under sleeve panel\n that allows for unrestricted motionThickness: 4/3 mmKid's wetsuitStrategic seamless paddle zones: An ergonomic. seamless under sleeve panel\n that allows for unrestricted motion Double superseal neck: A warm two layer design featuring a 360 degree\n smooth skin interior lining and a secure lock down Size: 07-8 YRS,09-10 YRS,11-12 YRS.