Treat yourself to Underclub!. Underclub is a subscription service for women’s underwear that delivers a personally curated surprise right to your underwear drawer (via your mailbox). The subscription is $21 for one pair of underwear from brands like Cosabella, Commando and Natori. Top brands (Cosabella, Commando, Natori and more). Customized to your style and size preferences. Free shipping. Great gifting options.