This is a set of two shoulder strap covers for water bottles, designed to be removable. ■ Size Length: Approximately 23-24 cm Width: Approximately 5 cm Strap insertion opening: Approximately 4-4.5 cm *Please allow for slight variations. ■ Material Cotton fabric The part that rests on the shoulder is made with two layers of quilted fabric, which should significantly reduce shoulder strain. These are not mass-produced items, so please be aware that there may be slight imperfections such as warping, misalignment, and double stitching. Please purchase only if you understand and accept handmade items. The finish of the curved parts, in particular, is something I would like you to confirm and be satisfied with through the images (asymmetry may occur). The opening used to turn the cover right-side-out is closed with the final stitch, without hand stitching (see image 3). *These water bottle shoulder strap covers are offered at a low price using fabric scraps. Therefore, there may be individual differences in length (the width is almost the same). Please be aware that the sizes of the two covers may vary slightly. If you are purchasing multiple sets, please keep this in mind. Preparation for entering kindergarten/elementary school Kindergarten Elementary school Kids Children Water bottle strap cover Water bottle cover Shoulder strap cover Type...Water bottle cover