This unisex PBT shirt is the perfect way to show your pride as a phlebotomy technician. The shirt features the acronym PBT, which stands for Phlebotomy Technician, in a stylish font. Inside of the letters is a pattern with all sorts of phlebotomy-related symbols, such as needles, vials, and blood drops. The shirt is made of high-quality materials and is comfortable to wear. It is also machine-washable, so you can keep it looking its best. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Ash color is 99% combed and ring-spun cotton, 1% polyester • Heather colors are 52% combed and ring-spun cotton, 48% polyester • Athletic and Black Heather are 90% combed and ring-spun cotton, 10% polyester • Heather Prism colors are 99% combed and ring-spun cotton, 1% polyester • Fabric weight: 4.