Prime Day who? REI's anti-Amazon Patagonia sale is all I care about — I've hand-picked 21 deals from $15

This is the perfect headband for cold weather. The soft fabric will keep your ears warm and also make you look stylish! I love the mauve color (pictured), but the sale extends to the red shade too. This headband actually has extra-long fibers, which help you stay warmer than ever.

The Patagonia R1 Daily Beanie is intended for winter sports like skiing and snowboarding. As it's low profile and close fitting, it's ideal for high-performance activities. The moisture wicking properties means it'll keep you both warm and dry even in snowy conditions.

How cute is that little tree on the rim? It may be summertime, but hats never go out of style, so there's no better time to get your mitts (pun intended) on this beanie. It's made of recycled wool and nylon so you know it's warm and comfy.

While this t-shirt is on sale in both mauve and blue, it's only available in XL and XXL sizes — and at this awesome 25% discount, I'm not sure how long either size will last. Patagonia's "Responsibili-Tee" shirts are made from recycled cotton and polyester, so it's definitely a shirt for the eco-conscious out there. Personally, I love the pictured mauve shade, but the stormy blue shade is beautiful too.

This is such a classic versatile hoody, I can't quite believe it's been discounted so sharply. This is the kind of sweater that never goes out of style. It's only on sale in gray (make sure you change the color on REI), but it's still available in every size except XS and XXL. This hoody is made from 30 plastic bottles, so you know you're wearing something that is benefitting the planet.

These women's shorts are perfect for running and hiking. The striking orange color will mean your hiking group will never be able to lose you on the trail — perfect for those misty days. Not only are these shorts lightweight and breathable, they also have three hidden pockets for storing snacks, keys, and your phone. The best part is that they're water repellant, too!

These gorgeous bright blue shorts are available in XS and S sizes, and I'm not sure how long this stock is going to last. Considering these versatile shorts are 40% off right now, I'm going to guess not long. These shorts are made from 65% recycled nylon and spandex, so they're durable (water repellant, too), and stretchy for über comfortable trekking.

REI says this sale is running low on inventory so you need to be quick! The sale is only on this gorgeous blue color, but honestly? This is the most striking shade so I'm not mad about it. I own this backpack (in pink) and it's so comfortable to carry. The straps are padded, so it's easy to carry for long distances, and the inside has a removable laptop sleeve for office-hike days.

One of my favorite things about Patagonia apparel is that it's so versatile. These corduroy pants are no different. Thanks to the organic cotton fabric and elastic waistband, these pants are super comfortable. They can also be worn dressed up or down, which makes them ideal for day trips, running errands, or even date night. Wearers claim that they run a little small, so recommend sizing up. The brown shade is at an even bigger discount — just $31 — but only available in size 12, whereas the black color is available in size 2-14.

Patagonia's Synchilla range is famous for a reason. This fabric is so soft, it almost feels like the chinchilla for which it was named (I assume, anyway). The body fabric is made from recycled polyester, so you know your jacket is helping the environment too! It's available in orange in S and XL, XXL in brown.

The Patagonia Wind Shield jacket is discontinued, so I'd grab it now, for two reasons: 1) before it sells out, and 2) while it's on sale. This pictured blue color is available in sizes XS and S, and the blue colorway is $138, but available in all colors. This jacket is designed for windy days and is intended to be fitted to keep body heat in and the cold out.

The Re-Tool Pullover is available in both the pictured light brown and dark forest green, but there are more sizes in stock in the brown. This fleece is made from 100% recycled polyester, so you know you're helping out the environment when you buy this jacket — more than other new fleeces, at least! I have had loads of Patagonia fleeces throughout my life and they're always so soft, warm, and keep their shape really well.

If I didn't have the aforementioned "yellow bag", I would definitely be adding this style to my cart. Not only is this backpack an iconic "black hole" pack (which does what it says on the tin — fits way more than it looks like!), it's also a hiking/commute bag. It has a laptop sleeve and a chest strap for those days when you have the office at 5 but hiking at 6.

The Patagonia Retro Pile Half Snap Pullover is almost as iconic as the Synchilla fleece — but the Retro Pile Half Snap is made from 100% recycled Synchilla fabric too! This sale is active on both the gray (pictured) and blue colorways, but is only discounted to $139 in the blue shade. Despite the massive $76 saving, the gray shade is still available in all sizes except XXL and L.

This fleece is destined for the mountains. The R1 Thermal Jacket is close-fitting and low-profile, perfect for keeping you warm on blustery cold ridges. The microgrid fabric wicks moisture, so even if you're sweaty, you'll stay comfortable while tackling the most challenging of climbs. It'll also keep you warm running errands in the wintertime, of course.

Although it's July now, this is the perfect time to get a new fall jacket. This is a thin water repellant jacket, so I wouldn't recommend it for winter! The clue's in the name with this one: the Patagonia Transitional Trench Jacket. This is ideal for transition seasons thanks to its removable hood and internal collar, which you can adjust based on your desired insulation level.

The R1 Air Zip Hoody is still available in every single size in this teal shade, and in most sizes in black, purple, and gray. This fleece is perfect for staying warm without needing a bulky outer layer, thanks to the close fit and hood. What's more is the fabric is breathable and sweat wicking, making it ideal for outdoor activities in fall, winter, and spring.

How gorgeous is this fleece? I'm obsessed with the pattern. The Classic Retro-X has a handy chest pocket for things like snacks, keys, and even your phone. This colorway is available in M and L, and has both recycled polyester fabric and odor control! I think I would choose this fleece out of all the options on this list for the striking pattern.

I know July is a weird time to be buying a jacket, but winter's going to come whether we like it or not... so we might as well be prepared, right? The Nano Puff jacket is insulated with synthetic materials, which means even people who stay away from down can make use of this. Right now, the discount includes every color (black, white, orange, green, dark blue, light blue) and most sizes, but hurry! I'm not sure how long stock will last at this price.

This is the exact same jacket as above, but in the men's cut. It's still available in all colors and most sizes, but at this price, I'm not sure how long the sale will last.