Sterling Big Dots Swaddle Designs Ultimate Swaddling Blanket. Baby soft, breathable, lightweight cotton flannel blanket with a beautiful decorative edge is a great gift and everyday essential. The generous size and square shape will make it easy to swaddle and a great sunshield, playmat for tummy time, privacy throw when breastfeeding, and a favorite cuddle blanket. Measures 42" x42". Easy to follow 123 Swaddle instructional label sewn on the edge of the blanket.