tandem kayak 3d model

Detailed 3D model of a tandem sea kayak (two-person), designed as a TPU backpack zipper pull. Exact length 80 mm. Realistic proportions but simplified. Include two shallow cockpits, smooth streamlined hull, rounded edges. Engineered for flexible TPU behavior: variable thickness — mid section thinner (1.2–1.6 mm) for bending, bow and stern thicker (2–3 mm) for structure. Add subtle flex grooves along sides or bottom to improve elasticity. Avoid uniform thickness. Integrated loop with 3–5 mm hole. Solid model, no cavities, no thin fragile parts, no sharp edges. Clean watertight mesh. Designed to print flat without supports.