Specifications: Made of hard-wearing mesh material and nylon. Comfortable to wear due to soft padding. Soft harness with fully elastic leash. Extra nylon strap with snap buckle, adjustable at chest and stomach. Designed for small animal, such as rabbit, cat, guinea pigs, rabbits, chinchillas, ferrets, hamsters, rats, mice, etc. Item Name: Hamster Vest Harness Material: Nylon Features: Soft, Bowknot, Mesh, Breathable Size Details [Our Size S] Back Length: 8.5cm/3.35", Collar: 18cm-24cm/7.09"-9.45", Chest: 20cm-23cm/7.78"-9.06" (Approx.) [Our Size M] Back Length: 10cm/3.94", Collar: 26cm-30cm/10.24"-11.81", Chest: 30cm-34cm/11.81"-13.39" (Approx.) [Our Size L] Back Length: 12.5cm/4.92", Collar: 34cm-38cm/13.39"-14.96", Chest: 35cm-40cm/13.78"-15.57" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hamster Vest Harness Please contact us to better resolve any issues before leaving neutral or negative feedback. If you have any questions, please contact customer service. Made of hard-wearing mesh material and nylon. Comfortable to wear due to soft padding. Soft harness with fully elastic leash. Extra nylon strap with snap buckle, adjustable at chest and stomach. Designed for small animal, such as rabbit, cat, guinea pigs, rabbits, chinchillas, ferrets, hamsters, rats, mice, etc.