Neoprene tops

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The BTTLNS Asterion 1.0 neoprene top sleeveless is designed as a thermal layer to wear under your wetsuit to keep your core warm. With the use of this baselayer under your wetsuit, you will find that you can swim in water that is 3 to 6 degrees colder. The baselayer is made of Neoprene with a thickness of 2.0 mm and features a high degree of flexibility. Due to the sleeveless design, you will experience no hindrance while putting on your wetsuit and no restriction in movement while swimming.