evo.com | Billabong Full Back Zip 4/3 > As part of the Synergy Series, the Billabong 4/3 Synergy Back Zip Wetsuit offers some of the best new wetsuit technology at a value that simply cannot be beat. Eco-conscious and stretchy, the Superlight neoprene along with GBS seams give wearers unmatched flexibility and thermal retention while the hassle-free back zip entry allows for easier transitions as you shimmy in/out in the parking lot. If you're looking for a great mid-cold water wetsuit at a bargain, look no further than the Billabong 4/3 Synergy Back Zip Wetsuit. Back Zip Glued and Blindstiched Seams Long Sleeve Full Suit 80% Neoprene / 10% Nylon / 10% Polyester Exterior Fabric Type Pro Stretch - 100% Recycled | Women's Billabong 4/3 Synergy Back Zip Wetsuit 2022 - 4 in Black | Nylon/Polyester/Neoprene