The Simple 20 range is the only one that comes in our Short Length.  This shorter length is great for carrying lighter cameras and using it as a traditional neck strap.

Regular Length is little longer than a stock strap, perfect for using as a traditional neck strap or hanging off one shoulder.  Also works as a cross body strap for most people up to about 170cm (5'7" tall). 

Our Long Length strap are 25cm longer than our Regular Length which makes them better for wearing across the body for people over 170cm (5'7") tall.

More detailed info on choosing a strap here.