Nylon.
Small, puppy and small dogs up to 11 kg (955200EU)
Medium, up to 16 kg (980322EU)
X-Large : + 23 kg (980323EU)
To excite your puppy with his new chew simply scrape on a hard, rough surface to liven up the flavour, bring an old bone back to life in the same way.
To keep your chews clean give them a scrub with a brush under warm water, using mild, non-toxic detergent, and rinse thoroughly.
Check your pup's chew regularly, make sure it's whole and intact, with no missing pieces. Always replace if the knuckle ends are worn down, or if it becomes too small to chew safely.
Chew toy.