DreamFit Bamboo Rayon Blend SPLIT King - Pale Sage (Adjustable Bed) Sheet Set Guaranteed to fit and to guaranteed to stay on. Elastic bands on underside corners of sheets features, allows you to self-tailor your sheets to any mattress height, giving them a perfect fit. This patented strap design guarantees your DreamFit fitted sheet will stay put even with the addition of feather beds, mattress toppers, or foam. 70% Viscose From Bamboo & 30% Cotton Pale Sage color.