Got mine on Amazon for about £7 and its grand 👍🏽 xx

@leigh-amyxo, ok I jus ordered d blue one too..gonna get dis baby out one way or another lol.. xxx

thank ladies does how much cm matter?

As long as its anti-burst, it doesn't really matter :) I got mine from eBay for £9.99 x

I got the blue gym ball from argos, £7.49 and it's fab x