Valid in Austria, Belgium, Czechia, Germany and 15 more countries
10% off first full-price order!
Yes. There are currently 3 active COS offers on WaveDeals, with savings up to $100 OFF.
Click “Show Code” on the offer you want above to reveal and copy it, then paste the code into the promo box at COS checkout and apply it before paying.
We list 3 COS codes and deals that our team checks regularly. Codes that stop working are removed.
The top COS offer right now saves you $100 OFF. Reveal the code above to use it.
Daily. This page was last refreshed on September 14, 2026, and our automated sync adds new COS codes as they go live.
Usually only one promo code applies per COS order, but you can often combine a code with an ongoing sale or free-shipping offer. Try the highest-value code first.
I've worked as an editor at WaveDeals since 2019: I publish and keep content up to date, including this “COS” page. Before a code goes live I check the terms of each offer — which shopping categories it applies to and whether any items are excluded — and I update the page promptly whenever something changes. In my experience, the biggest savings at COS usually come from limited-time brand sales and sitewide promo codes applied at checkout. Keep in mind that offer terms can change on the retailer's side, and some codes may depend on your delivery region.
Save 20% on select COS items!
Free shipping on orders over $100!
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