A 3D model of Baseball Gear, featuring a red bat with white lettering, red/black synthetic leather glove, and white stitched baseball, with a sporty modern aesthetic. It has highly detailed, low-poly design and is suitable for baseball training or gaming.

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 basketball, featuring brown leather-like texture and black stitched lines, with a sporty design aesthetic. It has low polygon count and is suitable for fitness and sports training.

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.