TIME FOR NEW INNERS?
Duvet inners should be replaced every 5–10 years.
Pillow inners need to be replaced more frequently, about every 2–4 years. If you continuously wake up with a neck ache, wheezy chest, or runny nose, it could be due to a pillow that has reached the end of its lifespan.
Discolouration, flatness, cold spots, and lumpiness are also clear signs that your duvet or pillow inners need replacing.