Stork S'port Maternity Belt Lg Xlr Fits dress sizes 15 20 Jobst Ultrasheer 15 20 ThighHi Replacement Section 27 x 35 Jobst Ultrasheer 30 40 ThighHi Replacement Section 27 x 35 * Adjustable mattress overlay with interconnected air filled cells offers protection from breakdown and or Stage I or II ischemic ulcer * Complete 3 section system 80 x 35 with pump and patch kit * 1 year limited warranty In Polar software or during strength training heart rate can be displayed as a graphical trend * HR based target zones with visual and audible alarm * You can define your target zones for a training session based on heart rate to help define the right intensity No uncomfortable stays or hard inserts * Uses the force of gravity to promote correct posture and gently support the low back pelvis and abdomen during pregnancy * Supports under not over the abdomen to provide maximum relief with optimal safety and comfort * Does not require a stabilization strap above the abdomen * Easiest application of any maternity support: Attach the backside panels to the front abdominal pad and adjust the side pulls * Adjustable loop closure with nylon lining allows easy adjustment for an accurate fit