Bathmatical. Bathmatical delivers artisan bath and spa products to your door. Subscribers will receive an assortment of 4-5 products ranging from handmade soaps, bath salts, scrubs, fizzies, bath teas, aromatherapy, and other unique products to make your bath more enjoyable. Free shipping!. Artisan bath and spa products. 4-5 products in each box. Relaxation delivered monthly.