Heathrow Scientifics Safety Bottle Carriers are designed to hold various-sized bottles (1.5 liters and 4.5 liters) in a safe manner and protect the bottle from breakage. The bottle carriers are made of flexible plastic that is chemical resistant and autoclavable. The carriers are available in 4 colors (black, red, green, & blue) and include an ergonomic handle to prevent hand fatigue. The handle swings out of the way for easy placement of the bottle in the carrier.