Slim-Fast, a business unit of Unilever, introduced on-the-go bottles for its shakes. The 10-ounce bottles are sold in packs of four, eight and 20 and are lighter, re-closable and more versatile than the previous Slim-Fast canned shakes, the company says. Additionally, a taste test conducted by Slim-Fast revealed that both current and non-Slim-Fast users prefer the taste of the new, bottled shakes to the brand’s canned shakes.