Two layers of 400gsm, sewn fluffy side in.
Fully extended length is 48cm x 13cm. They have a snap to fold the front portion of the insert over to double thickness. When snapped, the insert measures 38cm x 13cm.
Note that we have these in stock in packets of 10, if you order in multiples of 10, it will help us out a lot, however these are sold individually and you are welcome to order as many, or as few inserts as you like