Safe material: Made from safe and robust, waterproof and wear resistant material, this swimming belt delivers long lasting performance during intense training sessions. Posture alignment: Designed for swimmers and athletes, it helps adjust swimming posture and protects the waist and joints. Wide application: Improves swimming performance with a versatile, durable belt; a must for building strength and power across strokes such as breaststroke, backstroke and butterfly. Secure fit: Non slip design ensures a secure waist fit; the adjustable belt prevents shifting during workouts, while the pressure distribution provides comfortable support for extended swim sessions. Use scenarios: - Lap training: use during regular pool workouts to maintain proper form and reduce waist and joint strain. - Technique drills: worn during drills for breaststroke, backstroke and butterfly to enhance core stability and stroke power. - Endurance sessions: ideal for long swim workouts that require steady support without distraction.