Canon EOS 7D Mark II Instruction Manual page 33

Attaching the Strap
Pass the end of the strap through the
camera's strap mount eyelet from the
bottom. Then pass it through the strap's
buckle as shown in the illustration. Pull the
strap to take up any slack and make sure the
strap will not loosen from the buckle.
The eyepiece cover is also attached to
the strap (p.247).
Nomenclature
Eyepiece cover
33