REI is a leash connector with a carabiner + a D ring on each end, and can be used flexibly as: CROSS BODY CONFIGURATION for MELLEM or NOMAD*CONNECTOR for another gear such as to a dog walking belt Size:NARROW ¾" or 2cm wideWIDE 1" or 2.5cm wide REI in wide is recommended for the cross body configuration for the NOMAD, only the D ring of the wide style allows the long line to pass through (see gif on this listing). • 100% waterproof and will never retain moisture• 30" or 76cm long• easy to clean• single hand clip with a 360 degrees rotatable swivel at one end• odor proof to prevents bacteria growth• rust resistant hardware• box X stitching for lifetime durability Care Instruction:Hand wash or wipe down with a damp towel regularlySoak with medium strength detergent when more dirt is involved