The Seek Select 4/3 Front Zip combines high-tech materials for ultimate warmth and stretch. ION's premium wetsuit line features Graphene Lining - an incredible heat conductor that makes sure you stay warm on the water. Only high-quality materials were used to make the Seek Select the most progressive wetsuit without compromises. Made to explore the toughest conditions, ION added Graphene_Plush throughout the torso and legs. Hot_Stuff 2.0 lining provides additional warmth at the arms and shoulders. To increase flexibility and comfort in this crucial area, ION uses a new rhombus-shaped outside lining that stretches easily, thanks to its unique structure. Another feature that shelters you from icy showers is a small silicone print at the front zip opening area. It increases the connection between the flap and the rest of the wetsuit. Sealed and reinforced seams prolong the lifetime of this premium suit, making it sturdier and more robust against wear and tear.