- 100% Organic Cotton - Slim Fit T-Shirt - Round Neckline - Rib Neckline Bind - Crystal Embellishment The Istanbul Animalia Slim Fit Round Neck T-Shirt is a handcrafted cotton silhouette designed by our in house artisans. Reimagined in an exclusive limited edition print, this slim fit t shirt is adorned with intricately placed crystal embellishment before being finished with a rounded neckline complete with ribbed detailing.