For the Maine coast–based designer Sloan Russell, a stalwart of rosé-fueled picnics, finding the right outdoor wineglass was a Goldilocks-ian quest: Traditional glasses were too fragile, plastic versions too chintzy, and both were too bulky for her tote bag. So she created this stemless silicone glass ($20 for two at themonogramshops.com). The sleek shape and light-diffusing finish give it the look of a Riedel, while the supple material makes it sturdy, shatterproof, and packable enough to fit into a back pocket—should you fancy some pét-nat (click here for more on the buzzy bubbly) on the go.