I ordered a pair of these last week and when they arrived I ordered 2 more :)
These are great quality and a proper bargain @ £5
"Stretchy denim maternity jeans with adjustable back waist and cleverly cut stretch denim front. Over-bump fit.
Available in 2 washes (Indigo and Dark Indigo) and 3 lengths (Regular 29", Long 31" and Extra Long 33").
98% Cotton, 2% Elastane."
There are still a few sizes available in both colours although not all sizes as it's in their clearance section...that said I still think there's enough sizes to make it worth posting at £5!
Hope this proves useful for some of you as Maternity clothes can cost a small fortune! :)