However, like the vestigial nub, I think the real reason for the engineered plastic sleeve is because of the way the Pentax camera strap is/was supposed to be used. I don't know where the specifics went or why the method was "lost", but if you attach the camera strap as such, you will see "why" there is a taper in the plastic sleeve.
Enter the for your chance to win a camera. There's also Pentax neoprene camera straps with a broad anti-slip pad which feature a red Pentax logo up for grabs for five runners up.
Pentax Camera straps used to have little pockets where you could store a remote, the viewfinder cover M, or a plug/flash cap. These cool little pockets are gone from current Pentax camera straps. Evolution being as it is.
Professional grade camera strap for Pentax SLR cameras. Emblazoned with Pentax logo. This strap comes with a selection of different fittings and is designed to attach to all types of camera. It's not an official Pentax camera strap but it's every bit as good!