ONEILL DEFENDER BACK ZIP SHORT SLEEVE FULL STEAMER 2MM - BLACKONEILL DEFENDER BACK ZIP SHORT SLEEVE FULL STEAMER 2MM BLACK With a thermal liner that makes it feel like summer on the inside, the Defender keeps the water out, the heat in and ensures you are toasty at all times. An all round performer, fully flexible, comfortable, durable and incredible value for money. UltraFlex DS Neoprene GBS w Critical Taped Seams S. M. MS. MT. L. LS. XL. XLS. XXL Meshskin Back Panel Defender Series PolarFlex Firewall