Tyvek® bowl bags provide a convenient, time-saving method of wrapping rubber stopper bowls, flasks, beakers, containers, media bottles prior to sterilization. These Tyvek® muffs are autoclavable and promote excellent steam penetration and drying during sterilization. These Tyvek® bowl covers can be used amid steam sterilization to reduce time- consuming wrapping of open holders. In addition, each bag can remain in place on the bowl during setup, which minimizes the possibility of contamination. Tyvek® bowl bags are made from Tyvek®, they are puncture resistant and extremely tough. Tyvek® bowl bag incorporate autoclavable rubber elastic to provide a positive seal around all openings. These sterilization wraps provide outstanding strength, elasticity, durability, and tear resistance.