Modal blend. Dry clean only. Halter strap ties around neck. Heathered jersey knit fabric. BLUE-WS557. 001 1948. You may have heard about the trendy Planet Blue boutique in Malibu and Beverly Hills, but did you know about the store's own brand, Blue Life? Comfy hoodies and tees that aren't your basic old pieces, with details that will have you coming back for more.