Yak 'Step In' Long John Keep warm and flexible on the water with the step-in Long John. Designed specifically for paddling with printed backside and knee protection, it features 3mm neoprene yet remains easy to get into courtesy of the 1.5mm upper body. Features: 3mm Neoprene with flatlocked seams for comfort and warmth Printed knee and backside protection 1.5mm Neoprene upper body for easy donning