Photographic lens-changing bag (Needham IP20)

Changing bag for changing the lenses of your camera(s) without risking exposing the sensor to sand, dust etc. Excellent condition, lay unused in drawer for years. This sort of thing: https://www.photospecialist.com/b-i-g-lens-changing-bag-approx-50-x-50cm (but not this precise make). Please don't make me throw it away.