Look at failure points
Buckles, stitching, zippers, liners, filters and moving parts often determine usable life.
Check replaceable components
A washable cover or replaceable fountain pump can extend useful life.
Consider cleaning
Gear that is difficult to clean may be retired sooner even if it remains structurally intact.
Treat performance claims cautiously
Materials and marketing terms are useful only when the claimed benefit is supported.
General product-selection information only. A pet's health, anatomy, mobility, breathing and behaviour can change what equipment is appropriate. Follow product directions and ask a veterinarian or qualified animal-care professional when those issues matter.