Size guide Biothane leash
| Line size | Carabiner | Recommended weight (in kg) |
| S | small carabiner | up to 20kg |
| M | Medium carabiner | 20 - 35kg |
| L | Large carabiner | from 35 kg |
| Line size | Carabiner | Recommended weight (in kg) |
| S | small carabiner | up to 20kg |
| M | Medium carabiner | 20 - 35kg |
| L | Large carabiner | from 35 kg |
