medium running vest phone holder

The waist belt adjusts from 26–40in. Compare that range with your measurement over the layers you intend to wear; it is more useful than assuming a standard medium label.

The 20 × 13cm chest pocket holds the phone, while two 10 × 5cm shoulder pockets are for smaller items. Measure your handset and case before purchasing.

If a specific medium garment size is important, check the Amazon UK listing or contact the seller before ordering. Do not assume that “one size” maps to a particular clothing size.