Nitro - Youth Learn To Swim Kickboard Designed for improved body position Accommodates various kicking exercises and hand positions Advanced molded foam provides greater durability Size: 15"L x 12.5" W; Weight 0.20 lbs Scope - Recreational Kickboard Viewing window for underwater fun and discovery Slight flexibility offers maximum comfort Advanced molded foam provides greater durability Size: 16" L x 13" W; Weight 0.50 lbs Contender - Competition Kickboard Advanced hydrodynamic design Ergonomic shape for optimum performance Advanced molded foam provides greater durability Size: 17.5" L x 13" W; Weight 0.40 lbs