2mm Kid's & Junior's HAMMER Shorty Springsuit The 2mm O'Neill HAMMER Springsuit is made of 100% superstretch neoprene for unrestricted mobility, which makes it perfect for any watersport. Features durable flatlock seams, a double neck seal to resist flushing, seamless paddle zones for more flexibility & a chafe free day. O'Neill Wetsuits come with a 1 year warranty on materials and craftsmanship (90 days on accessories). You can help keep your wetsuit in great shape for years to come by always rinsing in fresh water and hanging to dry. A number of wetsuit care products can be found on our Wetsuit Accessories page.