These are two sheets of knitted bamboo sewn together. Bamboo is an incredibly absorbent material, so even these tiny sheets can make a good difference to how long a nappy will last between changes. Little Lamb knit the bamboo into the boosters rather than weave it which prevents it from shrinking, and I can confirm with the plethora of liners I've accumulated that this hasn't happened at all. I have been using mine for 5 months now and although they are definitely showing signs of wear, the most noticeable being the gorgeous softness when they arrive disappearing after the first few of the 6 prewashes recommended to reach full absorbency, though they don't become stiff rough or hard (and several of mine have a pink tinge due to my husband washing his non-colour safe red shirt with them). I habe found that stains do slowly come out in the wash or with a bit of sun. The thin two layer design has two main advantages for me - one is that although it is bamboo which is notoriously slow drying, it dries within a day by our rayburn or outside in a breeze or sunshine; the second is that it folds easily without adding bulk. This means I can add absorbency where I need it - having a boy, it's good to be able to boost at the front Especially in pocket nappies I find that I cam get leaks when the insert isn't wet it's length due to the wee all landing at the front.

With my first son we abandoned using cloth nappies overnight quite early on due to leaks. Discovering this product has meant that we've been able to keep going, though we now use three overnight - one inside the nappy the length of it, one folded at the front inside the nappy, and one between the nappy and the wrap, we can get up to 14 hours of overnight dryness with this combination and the little lamb bamboo fitted nappy. I have also used them as inserts inside a cheap Tiny Nippers pocket nappy. I put two the length of the nappy and one folded in half at the front, this creates a very slim nappy which will last 4 hours but dries very quickly in it's component parts. I think it can be added to most nappy systems easily, though if it was placed into a fitted or all in one it would need a liner over it as it isn't dry to stay against baby's skin.

Despite being from a known brand and in my opinion being one of the best on the market, these boosters are also one of the cheapest - it's 5 for 7 pounds or 10 for 12 pounds, working out at 1.20 a booster. I've seen them sell for 50p-75p pre-loved (used) so it's possible to pick up a bargain, or to regain a large amount of your investment in them back after use.