Memorial Day marks the first time that most beaches are officially open for the season. While diehard surfers have been catching waves all winter long, the rest of us are looking forward to hitting the water without a full wetsuit. Whether it means a jaunt to Montauk or Malibu, a perfectly packed bag ensures you won’t forget any essentials. Add a reversible bikini to give the illusion that you’ve packed far more than you really did. Then throw in some slouchy tees, like the extra-long ones from Aritzia, plus a few thin layers for when it gets chilly. If you don’t already own your own board, skip renting those beginner foam boards in favor of an ecofriendly one that handles just as easily. Once night falls, go for a dressed-up look, including a coral Zara dress and stacked Madewell sandals, but consider this a weekend away from looking overly done — a swipe of lipstick and a large amount of sunscreen is all you really need.