DreamFit Bamboo Degree 5 Sand Cal King Sheet Set 70% Viscose from Bamboo, 30% Cotton Degree 5 Bamboo Rich sheets are 70% Viscose from bamboo and 30% extra long staple cotton with a silk-like, sateen weave, providing the performance of bamboo with the strength of cotton. Bamboo is naturally temperature regulating, keeping the sleeper cooler, and is bacteria resistant. DreamFlexTM corner bands are securely sewn into each corner of the fitted sheet, guaranteeing a secure fit. The fitted sheet corner bands are 1 thick heavy duty elastic and fit under each corner of the mattress. The fitted sheet will not come off of your mattress until you are ready to take it off. DreamFlexTM 360o elastic sewn all the way around the fitted sheet is 4 times wider and 20 times stronger than most competitors products. FirstFitTM color-coded corner bands help to orient the fitted sheet correctly on the mattress. Luxury sized to fit todays thicker, more conforming mattresses. Our sheets are sized so that the fitted sheet allows the conformability of your mattress to come through. The luxury size also allows the fitted sheet to go over the corners of the mattress with ease. Fitted sheet fits up to 22 mattress height. Full through king sizes come with a fitted sheet, flat sheet, and 2 pillowcases. Twin and twin XL sizes come with one pillowcase. Split king options and split California king sets come with two twin extra-long fitted sheets. DreamFit sheets make the perfect gift for your friends and family members, as well as wonderful wedding gifts.