Bamboo is an eco friendly and sustainable fibre that grows very quickly using one third less water and often requires no pesticides. This range is soft, silky, cool to the touch, naturally breathable and hypoallergenic. They have packaged this range in a bamboo fabric bag that is reusable and perfect for storage. The fabric bag means they have eliminated the use of plastic in the packaging of this range. They are proud to be doing “their bit” where they can in reducing plastic consumption. Enjoy using the storage bag. This Bamboo extra deep fitted sheet has a depth of 38cm (15"). This sheet is available in a range of sizes. As mattresses get deeper with the addition of mattress toppers, protectors, they need sheets to allow for a good snug fit and avoid the common problem of sheets coming off during the night. They recommend this fitted sheet to sit 8cm (2-3") deeper than your mattress. This fitted sheets are generously elasticated around all 4 corners leading to a solid hold and fit on your mattress. This fitted sheet is suitable for mattress depths up to 30cm (12"). So long as you purchase the correct size of width and length then depth doesn't have to be exact, as any extra fabric tucks underneath the mattress, hence why we recommend taking a slightly larger depth than what your mattress measures.