You can use this neckband as a comfortable swimming aid during swimming lessons or to increase your swimming stamina. The pads are sewn-into the neckband in such a way that they improve buoyancy while supporting the neck area during swimming. This allows the swimming aid to equally provide support and a feeling of safety during swimming. Fibre/Yarn contains a Biocidal Product. Contains “silver sodium zirconium hydrogenphosphate – CAS-# 7440-22-4” and "silver sodium zirconium hydrogenphosphate - CAS-# 265647-11-8" built into the fiber polymer to counter the settlement and growth of micro-organisms and the development of odour in/on the treated.