A 3D model of a skateboard, featuring a wooden deck with colorful graphic print, metal trucks, and white wheels, and a modern street style aesthetic. It has high polygon details and is suitable for skateboarding parks, streets, or tricks.

A 3D model of a basketball, featuring a textured leather-like surface in brown with black rubber stripes and a realistic design aesthetic. It has high polygon count and detailed texture, suitable for sports training, game development, and fitness-related visualizations.

A 3D model of an inflatable boat, featuring red and black inflatable material with oars, seat, and steering wheel, and a sleek functional design. It has lightweight, foldable technical features, suitable for recreational boating, fishing, or leisure activities. （说明：原类目Fitness Equipment不准确，识别为水上运动器材Inflatable Boat，按要求格式描述其核心特征、材料、设计风格、技术特点及适用场景。）

A 3D model of a Speed Bag, featuring a brown leather-like texture with stitched seams and a vintage-inspired design. It has detailed suspension hardware and is suitable for boxing training sessions.