"FurHaven Calming Cuddler Donut Beds are designed to embrace pets in warmth and comfort - creating a calm space that soothes anxiety and promotes a deeper and more restorative sleep for your dog or cat. Deep bolstered edges create cozy ""pockets"" of extra warmth for a self-warming effect your pet will love. The ""pockets"" created by the bolstered edges create the perfect spot for ""nesters"" to cuddle into, with the pillow-y edges still comfortable enough for sprawlers and ""belly up"" sleepers to snooze away."