The duvet covers and waterproof liners are great for extending the life of my dog's favorite bed (that, of course, doesn't come apart for washing). We really stress tested his setup when he was incontinent from an illness and then developed a UTI so I can confirm the bed covers hold up to washing well! I wish there was a waterproof armor thing for the bolster pillows!! I'd buy those in a heartbeat. The only down side was that my dog ripped the waterproof liner with his nails while laying down, which sucked because the armor is a bit pricy, but worth it enough that I ordered him a new one (and a 2nd bed cover so the armor wouldn't be exposed while I was washing his bed cover). He rips everything with the same dewclaw so I shouldn't be surprised.