I had a adjustable one from Opie, after some testing with different lengths I found a length that worked out! After this I took some cord that I got from Paul at AHE(think it's zing-it)(but not that sure), and tied a fixed one up! I put the adjustable one on my GT UL! Sorry but I didn't measure it, if you would like I can, but what feels comfortable for me might not feel great for you, but you never know! Just let me know!