For the ultimate outdoor experience the Advanced Package Tyre Set includes everything needed to develop physical coordination and social skills.Each size tyre has a different tread design. The tyres can be combined and interchanged feely for endless play and problem-solving opportunities individually and in groups. Children will enjoy stacking jumping balancing crawling climbing and much more.The Medium Tyre Turtle Covers arced design enables children to practice balancing and can be used independently of the tyres on a flat even surface.The Medium Tyre Net Cover has a soft rope design.The Push Bars are used with the Small Black Tyres. They are easily assembled and will not loosen with non slip handles. Use the push bars to navigate and balance around the play area individually or as a team experimenting with the number of tyres used.Ages 3+Includes:4 x Small Black Tyres W600 x H150mm3 x Medium Green Tyres W640 x H200mm2 x Medium Tyre Turtle Cover Dia440 x D120mm1 x Medium Tyre Net Cover Diam444 x D25mm6 x Large Yellow Narrow Tyres W800 x H100mm3 x Large Tyre Convex & Concave Cover Dia680 x D70mm2 x L Shaped Wheel Push Bar Dimensions L590 x W845 x D25mm2 x T Shaped Wheel Push Bar Dimensions L845 x W865 x D25mm