VERISA Float Aid Discs EVA Foam Swim Arm Band 6 pc Set for Kids Boys Girls Toddlers, Learn to Swim, Age 2 – 6, 25 kg max
https://www.amazon.co.uk/dp/B07PCNK83C
These are ideal for young children starting to learn to swim. They are far less cumbersome than the old fashioned inflatable arm bands. No puffing, only to find they leak. They give the children the confidence and buoyancy needed in the water and the freedom to swim. The level of buoyancy can be adapted by reducing the number of discs. The discs also slot together.