Welcome to Tillys at Smith Haven Mall located in Lake Grove, NY. Shop the latest selection of men’s, women’s, & kids’ casual clothing, backpacks, shoes, hats, skateboards, & more. Choose from brands like Nike SB, Vans, Santa Cruz, Obey, The North Face, Dickies, adidas, Champion, Dr. Martens, & more. Tillys is your go-to for every season, with warm flannels and hoodies for winter, and boardshorts and bikinis for summer. Tillys is not just a clothing store, it's a culture.