100% organic cotton t-shirt. Nice and long (up to hips). Soft and breathable. The phrase "põlvest põlveni" means knee to knee, which is the slogan for babywearers :) We love to offer comfort for our kids and choose to wear in carriers that support them from knee-to-knee. "Põlvest põlveni" can also be translated as "from generation to generation" :) This t-shirt was the official t-shirt of the Estonian Babywearing Day in 2018.