A wetsuit for aquatic activities is disclosed below. The wetsuit includes a base layer and a backing layer. The base layer may be formed from a thermal insulation material, for example, and the base layer has a first surface and an opposite second surface. The backing layer is secured to the first surface of the base layer, and the backing layer has less stretch than the base layer. In addition, the wetsuit includes a plurality of sipes extending through at least the backing layer.
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