Safe, durable PVC construction: These arm rings are made from non-toxic PVC for strong durability and an eco-friendly swimming experience. Soft and comfortable: The soft, waterproof material minimizes chafing and skin irritation, making water time more comfortable. Easy to inflate and deflate: Inflate easily in the water to add buoyancy, then deflate after use and fold for quick transport or compact storage. Arm-friendly fit: Ergonomic contour follows the upper arm for a secure, snug fit that stays in place during activity. Use scenarios: - Beginner swimming lessons: Provides reliable buoyancy to help new swimmers learn balance and basic strokes. - Family pool time: Adds extra floatation for kids and adults during casual swimming and games. - Light water exercise: Supports gentle buoyancy for pool-based workouts or rehabilitation activities.