COMPLETE SET This is a 7 in 1 complete set for Kids, including one Bike Helmet and Two each of Knee, Elbow and Wrist pads! This will ensure all-round protection while they are at play doing sports, cycling, skating, roller blading etc. The breathable complete set is made from strong ABS to ensure MAXIMUM protection. HELMET MEASUREMENTS The measurements for this item are as follows, with these being suited for Ages 3-7 Circumference: 48~54cm/18.9~22.05 inch, you are however able to adjust the helmet to fit your child's specific size. Please do so according to the head size, weight, and age of your child. EXTREMLY STRONG & DURABLE Both the pads and the helmet use a tough PC for protection from impact, with the helmet containing a comfortable, thickened EPS foam inner shell for soft feeling and spongey impact absorption. The pads also employ breathable, snug foam lining, so do not chafe, or irritate during use. ADJUSTABLE There are multiple elastic straps and Velcro closures youre able to adjust to secure the fit against a multitude of joint girths. This is to not only make the set easier to wear, but to enable the maximum protection for your children. It will also let your children feel freer in the safety kit. MULTI-USE Use these in many appropriate cases such as for inline skating, skateboard, riding bikes, scooters, rollerblading and other potentially high impact, extreme sports.