Men’s Arctic TopBlackXT500TS – XXXL80% Polyester/ 17% Nylon/ 3% Elastane Lining: 100% Polyester. The Arctic top is designed with a long body portion to ensure adequate overlap between the top and leggings. Thumb loops prevent the sleeves from riding up during donning. Remember to remove them and tuck them back underneath the wrist seals. Tuck the top into the waistband of the trousers before donning drysuit to prevent any separation during the dive.