The foam of incorporated into the inflatable plastic sleeves of Kraulquappen armbands make it not only less bulky but also gives much more freedom of movement. Centrally placed arm hole for optimal buoyancy, no irritating seams, additional integrated foam core and air chambers with safety valve for greater safety and well-being. Ideal swimming aid for beginners, toddlers, infants and people with disabilities. Recommended from 8 months to 8 years up to 30 kg, inner diameter 6.5 cm