We mainly sell drinking systems from the American Nathan. Some of them are well adjustable and therefore also "one size fits all." Some other products come in multiple sizes. Therefore measure yourself well.
Nathan Running Backpacks Size Chart
| Mate | Chest circumference |
| XS | 83.8cm - 88.9cm |
| S | 91.4cm - 96.5cm |
| M | 99.1cm - 104cm |
| L | 107cm - 112cm |
| XL | 114cm - 119cm |
Size chart Reflective vest
| Mate | Chest circumference |
| S/M | 61cm - 102cm |
| L/XL | 96.5cm - 114cm |
