I’m sorry to be the one to tell you this, but there’s an affordable, comfortable, worth-every-penny clothing brand you’ve probably been sleeping on. Don’t worry, though: You still have time to stock up on their lightweight, breathable bestsellers (the vast majority of which are under $50) for the summer.I’m talking, of course, about Uniqlo, the ultra-functional Japanese brand that’s been expanding across the United States in the past couple of years. Uniqlo’s versatile basics have earned them a growing amount of fans (including myself, and a few others in our newsroom). Seemingly all of their clothes — many of which are unisex — can be worn in tons of different outfits and settings, making any one piece a good investment if you’re trying to build your collection of wardrobe staples.For summer, Uniqlo’s bestsellers for both men and women include lightweight fabrics like linen and cotton, breezy, relaxed silhouettes, and classic solid colors. They’re the kinds of pieces you’ll reach for again and again, all summer (or year) long. Take a look below at some of the most popular under-$50 Uniqlo items right now.UniqloThe moisture-wicking half-sleeve oversized tee everyone's talking aboutIf you're even a little familiar with Uniqlo, you've probably heard some buzz about their AIRism fabric, which is cool, moisture-wicking and breathable for summer. The brand's No. 1 bestselling clothing item for both men and women right now is this AIRism tee that we previously covered: It has a drapey half-sleeve design that's loose but balanced, with a classic crew neckline and a cool-to-the-touch fabrication. It also comes in a ridiculous amount of colors. Grab it in unisex sizes XXS-3XL.UniqloAn AIRism polo tee that's "surprisingly polished for the price"Another bestseller from the AIRism line is this unisex cotton pique polo shirt, made with the same moisture-wicking, breathable fabric. Leave the two front buttons open or closed, tuck it or untuck it — the shirt's midweight feel and sleek look can be worn in nearly any setting and look put-together but not stuffy. It comes in a ton of colors and unisex sizes XXS-3XL.Promising review: "I really like these AIRism polo shirts because they’re extremely versatile and comfortable. The fabric feels soft and lightweight, and it’s very breathable, which helps keep me cool throughout the day. That makes them a great option for both casual wear and more active situations. They work well with jeans, shorts, or layered under jackets, so it’s easy to put together different outfits without much effort. The quality is also impressive—the shirts hold their shape and color even after repeated washing. Whether I’m running errands, exercising, or hanging out with friends, these polo shirts are always a dependable choice." — MaxPUniqloThis half-moon shoulder bag, one of my personal go-to accessoriesI own this round mini shoulder bag that's been one of Uniqlo's viral standouts for a few years now, and I love how surprisingly roomy it is — the 4-liter capacity doesn't really show, either in the "mini" product title or the streamlined look of it. The adjustable strap on the end makes it super easy to take on and off and fit over any amount of layers (my older version does not have a buckle on the strap, but the latest one does, which also helps in this regard). The water-repellent finish has me reaching for it on rainier days. I also like the casual feel of the nylon fabric, great for a day in the park, at the beach or just walking around. You can get your own bag in a bunch of fun colors.UniqloThis classic crew neck tee beloved by a HuffPost writerHuffPost senior shopping writer Lourdes Uribe is a fan of these unisex crew neck tees, as she mentioned in a previous story. "I love how versatile it is, the slightly longer length than a boxy tee, and how weighted and thick the material is," she said. "It has a heft to it that makes it feel more expensive than it is and maintains the shirt's durability. I am broad-shouldered and particularly love the flattering cut of the shoulders. I have three in white and two in black and live in them year-round. My wife and I are constantly fighting over these shirts."The tee, made with a durable heavyweight cotton jersey, comes in a bunch of classic solid colors, in women's sizes XXS-XXL and men's sizes XXS-3XL.UniqloA cool, relaxed linen button-down people are buying in multiple colorsWear it buttoned up for the office, layer it open over a tee or tank for something more casual, roll the sleeves up on a warmer day — this button-down, made of 100% linen, is a staple you'll want to wear again and again. It has a slightly glossy appearance and is cool, relaxed and comes in so many colors. Find it in women's sizes XXS-XXL and men's sizes XS-3XL.Promising review: "Love these shirts, bought 3 in the bright pink, blue and the navy blue. The linen is not stiff, drapes nicely, the sleeves are long enough for my long arms and were easy to iron away the packing creases, recommend these shirts" — TrishUniqloA pair of women's jersey pants with a trendy barrel leg shapeThe barrel leg pant silhouette continues to attract shoppers, and Uniqlo's bestselling take on the trend is this jersey barrel pant that offers a softer, lighter counterpart to denim. Available in four colors, the pants have that cool rounded shape and relaxed fit, and provide some practical storage with pockets at the front and back. Grab your own pair in women's sizes XXS-XXL.Promising review: "I’ve been eyeing the barrel Jean from a number of designers and saw these from an influencer that I follow. I took her advice and purchased them and so glad I did. They are incredibly comfortable, soft and just so flattering. These in my opinion are the perfect barrel pant.i have them in black. For reference, I’m 67 (yikes, did I write that?) 142 lbs, 5’7”" — KarenRUniqloSome comfy wide-leg sweatpants that avoid looking frumpyMultiple reviews mention these high-rise sweats looking almost tailored, probably thanks to the straight-leg cut that gives them some refinement. Of course, sometimes you'll want a closed ankle to keep out cold, and thankfully, these have drawstrings in the hems if you need to adjust the silhouette. They've got side pockets to hold your essentials, and come in five classic shades. Get them in unisex sizes XS-3XL.Promising review: "These sweatpants are incredibly comfortable, and the material feels high quality. I really like the fit—they strike a perfect balance between relaxed and tailored. I’m planning to buy multiple pairs in different colors. Based on this experience, this is definitely a product I’ll keep coming back to." — DogonUniqloOr a pair of sweat shorts, so you can be comfy without overheatingIf you like the wide-leg sweatpants but full pants are just too much for the heat, you can grab a pair in the shorter style that's currently a bestseller in its own right. They have the same loose fit, elastic waist and pockets, and come in the same colors (plus a bolder red, if you're so inclined). These have a cool and sporty edge great for the gym, running errands and more.Promising review: "I just turned 70 but still love wearing shorts. How nice to have a longer pair that’s super comfy, looks great on older legs and different from the bicycle shorts I’ve been wearing! Just ordered a pair in black. Thankful to keep finding intelligently designed basics like these at Uniqlo." — AnneUniqloA lightweight cardigan with one major extra perk for summerOn its own, this chic cardigan is reminiscent of something more expensive, like J.Crew's Jackie cardigan, but what sets it apart is that the cotton-rayon fabric features UPF 25 protection from UV rays. The lightweight design would be so easy to toss on during a sunny day to keep your skin protected from the sun without having to wear a bulky layer that makes you sweat. It's machine washable for easy care, and the thin layer can also be folded down pretty easily to fit in your bag. Grab it in eight colors and sizes XXS-XXL.Promising review: "I live in Arizona, so am often on the hunt for light cardigans made of natural fibers to wear to work. I’ve purchased multiple UV protection Uniqlo cardigans several years back when they were 100% cotton. Those are a little snug on my now mom-bod, so I gave this new style a shot. I am happy with my purchase. The fabric is different, but the fit is still classic and most importantly, breathable." — VronUniqloA pair of easy-breezy linen blend shortsLaid-back and ideal for vacation or any hot day, these linen blend shorts hit just above the knee and strike the balance between refined and casual. Enjoy the practicality of side pockets and a drawstring waist (just note that the drawstring on the elastic waist is on the inside for the men's version, and on the outside in the women's version). These come in up to seven colors, in women's sizes XS-XL and men's sizes XS-3XL.Promising review: "Exactly what I wanted and more. The fabric feels loose and nice, the inseam is flattering and it looks exactly like a Saturday feels." — JaredUniqloThis boxy blouse that's begging to be worn all summer longThis swingy, structured linen blend tank can be paired with those shorts I just mentioned for a monochromatic look, or with a wide range of other bottoms. Wear it to the office, on vacation, to brunch and so much more — it can be dressed up or down, and the streamlined silhouette makes it an elegant choice for just about any warm-weather outing. Find it in six colors and women's sizes XXS-XXL.UniqloA mid-rise, wide-leg pant you'll want to wear year-roundA comfortable, well-made trouser is a must for any office worker, and these wide-leg pants more than fit the bill. They have a mid-rise with belt loops for accessorizing, pockets, and a relaxed straight leg made of wrinkle-resistant, two-way stretch fabric. Find them in three neutral shades and women's sizes XXS-XXL.Promising review: "These are some of my favorite pants that I own. I have them in several colors. They are comfortable, breathable, and are super flattering. I think these pants are elegant and can be styled professionally or can be worn with a more revealing top for a different look. I have nothing bad to say about these pants. Highly recommend." — KaityUniqloA scoop neck racerbank tank with built-in bra cupsIt's never pleasant to be stuck wearing an uncomfortable bra on a sweaty, hot day, and now you don't have to. Uniqlo has a few bra tops, but one that's made the bestseller is this ribbed racerbank tank, which isn't cropped and has 360-degree support to keep you feeling secure and comfortable. The tank is casual but not too obviously sporty to be worn outside of your workout time, and comes in five colors. Get your own in sizes XS-XXL.