The Tropic uses a multilayered Tricore material that includes a flexible and fast-drying skin-out chest panel. Well shaped to provide both comfort and range of motion. Seams are glued and blind-stitched on exterior layers, and having no interior stitching adding to the comfort. A 360-degree smooth-skin neck with adjustable Velcro closure seal is paired with excellent O-ring seals at the wrists and ankles. Combined, these make the Tropic just about the most seal-successful wetsuit. A smooth-skin underflap seals against a smooth-skin strip that runs along one side of the track to create a skin-to-skin seal. This is backed by double overflaps. The zipper is reinforced at its base and comes with a finger loop for easy zipping. Segmented Trilastic kneepads have a linear shape to follow leg movements.