This is Stentor coeruleus, one of natures largest, most beautiful single-celled organisms. It's vivid blue pigment, cilia-lined trumpet shape, and incredible ability to regenerate make it a favorite among microscopists. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions.