Anti-burst "Pezzi" balls can be purchased via The Physical Company tel 01494 769222
The average sized ball is 65cm & is suitable for those between the height of 5'4 & 5'9.
For those who are taller than 5'9 the 75cm and those with a height less than 5'4 the 53cm would be more approptiate.
Great new Yoga & Breathing for Pregnancy & Birth Book
Susannah Dean Ramponi has published a beautifully illustrated guide to yoga and breathing for pregnancy and birth.
Well worth its cost of £9.99 and it is available from Amazon.
Perfect to accompany your Yogabirth classes.
See the AIMS.org website for information about their well researched and clearly written books and e-books