Our "Bloodstains are Red, Ultraviolet Lights are Blue" tumbler is the perfect accessory for those who appreciate a touch of mystery and intrigue. This unique tumbler features a captivating design inspired by crime scene investigation. With its bold red color and intricate bloodstain patterns, it's bound to turn heads wherever you go. Crafted from durable and BPA-free materials, this tumbler is the ideal companion for your daily adventures or crime-solving activities. Whether you're on the go, at home, or in the lab, our "Bloodstains are Red, Ultraviolet Lights are Blue" tumbler will keep your beverages at the perfect temperature, all while piquing curiosity and sparking conversations. Sip in style and embrace the enigmatic charm of this one-of-a-kind tumbler.