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. Swim rings with integrated water protected foam. Diameter of the arm-opening: approx. 6.5 cm. Recommended for 18 months and up. Suitable for children with bodyweight from 11kg up to 30 kg.