COS Promo Codes for May 2025

Ready to add some chic pieces to your wardrobe? Sign up for the COS newsletter and text alerts and receive a COS promo code for 10% off your first order, plus free shipping to sweeten the deal. Whether you're eyeing sleek dresses, minimalist bags or perfectly tailored jeans, it's the ideal time to elevate your collection. 

By signing up, you'll also be in the know with updates on the latest arrivals, exclusive flash sales, and special offers—because who doesn’t love a little fashion insider access?

Once you get your COS discount code, it’s time to shop! Go to cos.com, browse the site, and select your favorites. When you’re ready to check out, choose your size and click “ADD TO BAG,” and then click “VIEW BAG.” You can also select your size, continue shopping, click the bag icon in the upper right-hand corner of the page, and then click “GO TO SHOPPING BAG.” 

When you reach the cart, look for the phrase “Got a promotion code?” under Shipping and Handling. Click it, and then enter your code in the “Please enter your promotion code” box and click “PROCEED TO CHECKOUT.” You can check out as a member or a guest; enter your email address to complete the process.

If chic, everyday fashion is your thing, COS has you covered. We’ve rounded up some of our favorite picks below, and with your COS coupon, you can save on these pieces and so many more timeless looks.

If shipping fees take the fun out of online shopping, you’ll be happy to know that COS provides free five to eight-business-day economy shipping when you spend $150 or more. For orders below that price threshold, shipping is only $5.

If you need your items fast, get your delivery in three to five business days with $10 standard shipping or in one to two days with $25 express shipping. 

Orders get delivered Monday through Saturday to residential and commercial addresses unless you place an express shipping order after 4:00 p.m. EST on Friday (which will arrive the following week). COS delivers to all states, including P.O. boxes. It does not currently offer an express shipping service to Alaska or Hawaii at this time, nor does it ship to APO/FPO/DPO addresses or U.S. territories.

COS knows that students deserve a break, so if you’re enrolled at a college, university, or trade school, you can save 10% in-store and online through the Student Beans network. To claim your discount, visit the Student Beans website, navigate to the COS page, and sign in to verify your membership.

Your discount code is valid on both full-price and sale items, but it cannot be combined with other offers. Redeem your promo by submitting your code while you’re checking out at cos.com.

If you’re shopping in-store, you can retrieve your Student Beans ID on your smartphone and present it at the register to get your discount.

COS believes in mindful dressing, so they’ve created a way to help you pass along your pre-loved pieces and get a reward in the process. After you edit your wardrobe, send in your gently used styles to ThredUp and earn COS in-store credit. 

Here’s how the program works:

— Visit cos.thredup.com to obtain and activate a Clean Out Kit or print a free shipping label to use on any box.

— Pack up your freshly laundered pre-loved items from any brand, keeping in mind that worn or damaged items with pilling, fading, shrinkage, stains, odors, or alterations will not be accepted. Next, drop off your items at a UPS, FedEx, or USPS location listed on your shipping label.

— Once your items sell, you’ll earn COS in-store credit.

If you’re delighted by fantastic deals, be sure to keep COS' sales events on your radar. You can save even more when you shop the brand’s annual promotions, such as its Black Friday and Cyber Monday sales, as well as its end-of-season sales.

COS Black Friday & Cyber Monday 2025

There’s nothing quite like a shopping event that delivers, and the COS Black Friday and Cyber Monday sales never disappoint.. Last year, we saw up to 30% off everything from bags and dresses to sweaters, pants, and shirts. Expect more of the same this year with plenty of stylish markdowns to refresh your wardrobe without the buyer’s remorse.

The sale typically begins a few days before Black Friday and continues through Cyber Monday. It’s a great time to start on your holiday shopping or treat yourself to something special.

COS End-of-Season Sales

When you want to score major savings, be sure to check out COS’ end-of-season sales. During these events, customers regularly receive deep discounts on end-of-season closeouts. We’ve seen items discounted by as much as 70%.