100% STITCHLESS AND FULLY LASER CUT GRAPHENE INTEGRATED SECOND SKIN. The long sleeve Layer-X is possibly the closest thing to a second skin you could think of. Not a single stitch, 100% laser-cut, and with graphene integrated into the textile, it just feels like wearing a highly protective layer of… air. With a weight of only 180 grams, the Layer-X does not pay an extra cost in weight to keep you protected. Graphene plays a key role in giving you the protection you need while enhancing the performance of the materials used in this layer. [[new-tab]] LAYER-X (LONG SLEEVE) INCHES XS S M L XL XXL Chest 36.5 38.5 40.5 42.5 45.5 48.5 Center back length 26.3 27 27.8 28.5 29.3 30 CENTIMETERS XS S M L XL XXL Chest 93 98 103 108 116 123 Center back length 67 69 70 72 74 76 *Measurements are of the product, not your body's -when picking the right size, add 3 inches (7,6cms) for a slim fit, 5 inches (12,7cms) for a regular fit, and 8 inches (20,3) for a loose fit - to your body measures, then check the size chart* *If your measurements fall between two sizes, it's advisable to choose the larger one, as our t-shirts typically run slightly smaller.*