FINAL SALE - No Refunds These grey/black suits have approx. 2in less length in the torso. If you are on the cusp of sizing, we recommend sizing up to the taller size to account for the short torso. If you have any questions, please give us a call! (805) 702-1818. The Colby + Yamamoto 2mm Long Arm Spring Chest Zip is designed for cool to mildly warm conditions, typically used in water temps in the mid 60s and up. Like all Colby + wetsuits, it features Yamamoto #39 in the torso for durability, shape retention and warmth, and Yamamoto #40 in the shoulders and arms for added flexibility and freedom to reduce paddling fatigue. We use a custom-made jersey from the world's premiere jersey provider which has a silky hand feel with amazing stretch and resilience. The Colby + Yamamoto 2mm Long Arm Spring is features triple-glued and blindstitched (GBS) seams with internal taping in critical areas (those that take the most abuse). GBS stitching combined with internal tape will improve the longevity of the suit and also helps reduce leakage from sew-through, which is quite common on suits that are under 2mm in thickness. It doesn't completely alleviate it, but certainly helps. The chest zip design is a tried-and-true standard and features an all metal YKK zipper which will outlast the life of the neoprene. It's tough as nails, but not too bulky or heavy. The dark grey upper body jersey turns nearly black when wet and also indicates where the Yamamoto #40 is used. These grey/black suits are our 1st batch of production and are approx. 2in shorter than our updated suits to come. Please keep this in mind and always try on your suit before you wear it:)