Sommerfuglen is a Danish knitting and embroidery retailer with an online shop and a store in central Copenhagen. Established in 1983, the business serves makers with a broad selection of materials, patterns, kits, books and tools for knitting, embroidery and crochet. Its range includes yarn in qualities such as wool, cotton, alpaca, silk, cashmere and mohair, from brands including Isager, Filcolana, Rauma and Sandnes Garn. Sommerfuglen also offers its own Walløe yarn, available in carefully selected colours.

Customers can browse knitting kits and patterns for adults and children, as well as embroidery kits, fabrics, threads and designs from established makers. The shop stocks crochet kits and yarn, project bags, needles, accessories and other supplies for handcraft. Its catalogue includes Danish and international books and designs, alongside selected home and gift items. Sommerfuglen also provides courses and longer craft stays, and promotes workshops and events. With online ordering, delivery and an in-person shop, it brings together supplies and inspiration for both experienced crafters and beginners.