Pump and tape measure included ideal for building core strength robust pvc construction corresponding core balance fitness equipment available transform your sitting and exercising with the core balance anti burst gym ball, a fantastic aid for improving balance and building foundational core strength. Because the ball is inherently unstable, simply sitting on it forces your stabiliser muscles to constantly engage and work overtime to keep you steady it’s like an automatic core workout! Constructed from durable anti burst pvc, this ball offers superior longevity and will slowly deflate, rather than popping, should it ever be pierced. You can work out with confidence thanks to the integrated anti slip lines around the perimeter, which stop it from rolling and slipping under your weight. This ball is a truly versatile fitness partner use it to perform challenging crunches, as an unstable base for dumbbell work, or as a prop to deepen your yoga and pilates stretches. Available in four sizes with a helpful guide to find your perfect fit, it even includes a pump and tape measure for easy, accurate inflation up to its impressive 250kg maximum weight capacity.