Suitable for carrying various combinations of pens, vials and cartridges as follows: a. Two insulin injection pens either pre-filled disposable pens or refillable pens, OR b. One insulin injection pen plus 2 x 3ml cartridges or one insulin pen plus 3 x 1.5ml cartridges OR c. 2 x 10ml vials of insulin Inner Wallet Dimensions: 83mm x 180mm (3.5" x 7"approx) Contents not Included.