An anchor strap is a strong and secure strap that is used to hold something firmly in place, like a boat or a heavy object, to prevent it from moving or drifting away. Full definition
When switching a convertible child safety seat from rear - facing to forward - facing, refer to your child's safety seat manual to see how to properly switch your lower anchor straps. (chop.edu)
New car seats come with anchor straps to attach to these. (newkidscenter.com)
The Primal 7 features two independently anchored straps with rings for handles. (acefitness.org)