The Mountain Kids DJ Guinea Pig T-Shirt 100% Cotton Made in US 100% preshrunk cotton We are pioneers of water based ink and have perfected it's use to create photo-realistic imagery that is Not attainable by other screen printers Created, developed, dyed, and printed in Marlborough, NH The Mountain uses only environmentally friendly water-based inks and dyes Oeko-tex 100 Certified which guarantees our shirts are free of chemicals harmful to your body