Delta Sigma Theta Sorority-inspired Laptop Cover | DST 1913 | Delta | DST Technology Tools | DST Laptop Case Delta Sigma Theta Sorority-inspired laptop case. Carry your laptop with style! This high-quality sleeve is available in three sizes to protect your laptop from scratches and minor impacts. Printed on one side with a black backside, edging, and zip, it's an elegant and stylish companion from day to day. - Delta 1913 text - 100% Polyester - Top-loading zipper - Black polyester back - Lightweight.