The SLR model is best for digital and film cameras or video cameras and spotting scopes that weigh over over 2.25 pounds. The shoulder pad is 1 5/8" wide and can be worn comfortable on the shoulder or slung around the neck. The strap itself is a3/8" wide. This is an ideal strap for those that are hauling heavier/bulkier equipment – the type that seems to always want to slide right off your shoulder.
SOLD
The LT model is for any laptop or camera bag that has two loops on either end. It is made to comfortable support from 2.5 – 20 pounds without falling off your shoulder. The pad on this model is the same size as the SLR, but the nylon strap is much wider at 1". The UPstrap is a brilliant product for those who are sick and tired of having to readjust their straps constantly. While no strap will make a heavy load lighter, the UPstrap can at least make such a load more comfortable to carry.
Review:
UPstrap – The Ultimate Camera Strap : Complete Digital Photography
These are original models from a few years ago. All are in new condition. I believe they originally sold for around $34 - $40. I have two of each.
The UPstrap sight is:
UPstrap Professional Non Slip Camera Straps
Asking $25 each shipped via Priority Mail.