A 3D model of a Children's Climbing Wall, featuring wooden panels, colorful climbing holds, and a beach-themed design. It has a playful, vibrant aesthetic with modular safety structure, suitable for children's indoor play or home playgrounds.

A 3D model of a hang glider, featuring a triangular wingspan with blue and black fabric, metal frame struts, and a modern, streamlined aesthetic. It has high detail and is suitable for outdoor sports simulation or product visualization. (类目纠正：原Fitness Equipment不准确，应为Outdoor Sports Equipment/Hang Glider)

A 3D model of a blue kayak with two gray paddles, featuring a modern, sleek design and plastic body. It has a low-poly count and is suitable for water sports activities like recreational paddling.

A 3D model of a snowboard, featuring white/light blue design with blue binding clips and anti-slip patterns, a modern minimalist aesthetic. It has low polygon count, suitable for winter sports scenarios.