Align-Pilates® Curved Pro Sitting BoxPRODUCT DESCRIPTION Align Pilates curved Sitting Box has rounded sides for Long Box exercises that will aid comfort in supine position. Slightly smaller in size than the Align Pilates Pro Sitting Box, this model gives another option that can be used on all brand of Pilates Reformers, including all of Align Pilates. Abrasion resistant vinyl upholstery covers high quality EVA padding, which will prolong the life and gives excellent memory and