If you want to take your pet out or go swimming with it, in order to ensure its safety, it needs this product Material: Polyester Note: The straps can be adjusted in some sizes, you can refer to the s more→ize chart and our recommendations to choose the size Product contains: 1*clothing Size: XS, Bust: 30-42cm, Length: 20cm, Neck circumference:25-35cm, Recommended pet weight: 2-4kg Size: S, Bust: 41-53cm, Length: 26cm, Neck circumference:36-37cm, Recommended pet weight: 4-7kg Size: M, Bust: 41-63cm, Length: 30cm, Neck circumference:40-48cm, Recommended pet weight: 7-12kg Size: L, Bust: 50-75cm, Length: 35cm, Neck circumference:42-54cm, Recommended pet weight: 12-20kg Size: