Soft PU surface reduces arm strain during training while maintaining stable flight of the volleyball, supporting accurate passing, serving and spiking. density nylon encases a rubber bladder to preserve ball shape and elasticity for consistent performance and responsiveness. Versatile for indoor and outdoor use, suitable for school physical education classes, family gatherings, and outdoor activities; kids can exercise and play while learning movement and coordination. Beach volleyball design features machine sewing technology for even stitching, enhancing durability and seam strength. Usage scenarios School PE class or gym practice: reliable flight stability and comfortable grip support focused training and skill development. Family gatherings or backyard games: easy setup for casual, active play across different age groups. Beach or outdoor park sessions: durable construction with even stitching provides longlasting performance during everyday practice.