Rip Curl Omega 1.5mm Back Zip Short Sleeve Spring Wetsuit 2021 The Rip Curl Omega 1.5mm Shorty is a great wetsuit for any type of water sport and one that will certainly last the test of time. Best used in the summer months in the UK and warmer climates abroad. FEATURES E5 Stretch arm panels - Premium high stretch, lightweight neoprene with 30% more stretch, 20% lighter and 10% warmer than E4. E3 neoprene - Standard lightweight stretch neoprene with high durability properties. E-Stitch high stretch seams - Lightweight, super stretch Mesh skin chest & back panels - Smooth mesh panels that absorb solar heat and reduce wind chill.