ZJY Adjustable Elastic Baby Knee Pad Crawling Safety Protector for Infant Toddler, 6 Pairs Size:circumference approx 15cm/5.9 inch(unstretched); overall size 13.5cm/5.3 inchx 7cm/2.8 inch (LxW);round pad (in the middle) diameter 7.5cm/3 inch For 9-24months baby; Durable, machine washable and dryer safe FREE Ebooks : 'BABY SHOWERS REVEALED' and ' ALL ABOUT BREASTFEEDING' (Sent by email) Package include: 6 pairs ,Color:picture color Material:80% cotton,18% Dacron and 2% Spandex; Condition:Brand new