Natural 100% wool balls. Soft ball, perfect for indoor play with your furry friend. Perfect for cold winter nights. :) These balls are very durable, but they are not indestructible. Some dogs tend to and want to destroy anything they get, so use the ball for playtime bonding, training reward and other constructive ways. All balls are handmade and can vary a little bit in size. Balls are washable and will renew (regain rigidity and structural strength) when washed at high temperatures. I'll send the ball in random color if not specified (we only use natural tones as in images). 🐾 100% PLASTIC-FREE products and packaging 🐾SIZE - LARGE for Labrador Retriever sized and LARGER dogs - MEDIUM for Jack Russell Terrier sized and LARGER dogs - SMALL for Jack Russell Terrier sized and SMALLER dogs 🐾 MATERIALS - 100% Natural wool 🐾 DIMENSIONS - Ball diameter - L - 8-9 cm / 3 - 3.5'' - M - 6-7 cm / 2.35 - 2.75'' - S - 4-5 cm / 1.5 - 2"