Amazon’s summer Prime Day — which is now a four-day event rather than the usual two days — is well underway, and we’ve been working hard to surface the best deals for our readers. We’ve sorted through thousands of on-sale items to pinpoint truly excellent discounts on the things our experts have found are worth your time and money.

Below, you’ll find all the best Prime Day deals, curated by yours truly. Lots of Strategist best sellers are back on sale this year, including Vitamix blenders, dentist-approved teeth-whitening strips, and snail-mucin essence.

Walmart is competing with Amazon this Prime Day, offering great savings on our favorite laptops, 4K TVs, earbuds, and other WIRED favorites.