the present invention is applicable to the field of weight training . the device described herein comprises of insulated twin manacles that would be placed upon the users ankles and attached to a weighted cable . the user has a wide array of exercises to choose from at this point including hamstrings , abdominal , quadreccepts , etc . the rise of weight to achieve an isotonic contraction has long been recognized to promote proximal musculature in a desired anatomical region . a twin manacle design allows the user to engage both appendages simultaneously allowing for a balance to exist between both limbs . this directly attacks the &# 34 ; dominant / subservient &# 34 ; theory that we can define as one limb or appendage having the ability to over compensate for its weaker counter part .