The Universal Crotch Strap will fit most lifejackets and it is manufactured in the UK.
This universal crotch strap is made of strong webbing, the same type as is used in the lifejacket webbing. Key seams are all box and cross-stitched off with red thread so the wearer can easily identify any signs of wear.
It is also available to buy as a multi pack on this link.
The adjustment is from 80cm – 140cm which means there is ample adjustment for wearers of all heights and lifejackets whether waist belt or chest belt.Check out the pictures. The longer length of belt loops through itself around the lifejacket webbing at the back. The small front piece loop goes over the buckle on the front. Connect the 2 pieces at the buckle and adjust to ensure a comfortable fit.
RTS also supply a Universal Three Point Crotch Strap for greater peace of mind.
The Commercial sector is really pushing the use of crotch straps. Many offshore industries will not allow workers to wear lifejackets without crotch straps. They do provide greater security for the wearer should they end up in the water and all lifejacket wearers should consider using one.