Spectra S2 Plus Single Double Electric Breast Pump, 1 Each Dumbell Weight Racks RailTM easily folds up to 14283 RailTM easily folds up to store out of the way and will not accidentally fall down causing an impact injury * Unmatched sturdiness unlike other fold down rails that wobble the P 4lbs * A double stitched exercise weight for the upper or lower extremities * Features velcro type closures heavy duty vinyl cover and each weight is stamped with both pounds and kilograms * Also features hanging hole for weight storage rack * Rehab ankle or wrist weight * make this a great choice for hospital grade pumping that doesn't compromise on convenience disc and lid for each bottle)