[Size Guide - M size measures approximately 29"L x 21"W x 1.5"H works great as medium small dog bed mats for dog up to 40 pounds Ultimate Sleep Surface - Our dog bed adopts 350gsm deluxe plush which is skin friendly and comfortable. Full stuffing to ensure your little furry friend surrounded by love & warmth helps them to calm down faster ease anxiety and sleep well. Experience Year-round Comfort - The warm fleece side provides warmth in the cold winter and autumn while the faux linen side offers cool comfort in spring and summer Comfort & Versatile - MASSFU fleece foam dog mat is filled with high-density foam and delivers exceptional support and cushioning. It fits in crates carriers and vehicles and adds comfort to any spot in your home Machine Washable - Our kennel bed is machine washable and designed to retain its shape through multiple wash cycles. We recommend a gentle cycle with low heat tumble drying making it an ideal hassle-free option for busy pet owners.]