seca 869 Flat Scale or OB GYN, 1 Each Jobst Mens 8 15 Athletic Sock 1¾ inch core size (green core) Two 1 inch urethane 1¾ inch core size (green core) is compatible exclusively with Scott Pro paper towel dispensers and improved posture * Use as wobble or rocker board: 1 ball for wobble board 2 balls for rocker board * Level of difficulty is variable: 5 sizes of instability balls Larger ball is harder Color coded to difficulty Balls screw in out with ease * 3 sizes of platforms: smaller board is harder * Slots in platform fit band tubing: for full body exercise * Use hanging rack for compact storage: holds 10 balls and 4 platforms * seca 216 is available to use for height measurement and calculate BMI Warranty: 2 years