Amazon has launched its first major sale of 2026 with the Spring Deal Days now underway until 11:59 PM on Monday, March 16. Offering discounts of up to 40% on tens of thousands of products—from tech gadgets to beauty essentials—this event features big names like Apple, Dyson, Shark, and more.
Having covered fifteen Amazon sale events, I’ve gained deep insight into how these sales work, including securing the best bargains while avoiding buyer’s remorse. Unlike Prime Day, shoppers don’t need a Prime membership to access the top deals during Spring Deal Days. However, Prime members gain perks like early access to Lightning Deals, bigger discounts on select products, and free, faster shipping—making it a smart time to try a free trial if you’re not already a member.
Before purchasing, it’s wise to compare prices, as other retailers such as Argos, Dunelm, M&S, and Debenhams also offer attractive spring discounts on homewares, garden furniture, and cleaning gadgets—perfect for refreshing your home as the seasons change and bank holidays approach.
READ MORE: Jamie Oliver’s Legendary Italian Restaurant Makes Triumphant Return to UK High Street
READ MORE: Royal Mail Warns of Delays Across 88 Postcodes Amid Operational Challenges
While the names of Amazon’s sale events have evolved—from Black Friday to Prime Day, Big Deal Days, and now Spring Deal Days—the brands generating excitement remain largely consistent. Each sale features attractive deals on Ninja, Shark, Remington, COSRX, Samsung, Lego, Elemis, Dyson, ghd, Sony, and Apple.
In recent years, AirPods have been a reliable bestseller, with the AirPods 4 (without noise cancelling) currently discounted to £99.99 proving especially popular. Amazon’s own devices also draw considerable attention, offering steep discounts thanks to the company’s pricing flexibility.
However, examining Amazon’s bestseller lists reveals surprising consumer favourites beyond tech and beauty. Household essentials, especially items that shoppers can bulk buy to save money, are consistently top sellers. Dishwasher tablets like Finish Quantum Infinity Shine, now £20.89 for 166 tablets and 59% off, are cheaper here than many supermarkets.
Pet owners also seize this time to stock up on premium pet foods, with Lily’s Kitchen cat food 26% off and Harringtons dog food 28% off. Even Andrex toilet roll sees a significant 53% discount in the sale.
But the standout, dependable bestseller across every Amazon sale I’ve covered remains one of the most universal essentials: underwear.
Calvin Klein’s classic black boxer shorts have topped bestseller lists at every Amazon sale event I recall. This week, they are priced at £25.35 for a three-pack—a 40% saving and just £8.45 per pair. This is even cheaper than during last October’s Prime Day, where the price was £26.64. More than 1,000 packs have sold so far this month, and the boxers rank prominently in Amazon’s Top 100 bestsellers for the Spring Deal Days.
While several colour options are available, with some sets even more affordable—like a blue, white, and red pack at £22.42 (a 23% discount)—the classic black boxers with the white Calvin Klein logo remain the favourite. Typically priced at £44, these boxers have an impressive 4.6-star rating from over 62,000 reviews. Customers praise their softness, durability, timeless design, and comfortable fit.
One reviewer said, “Calvin Klein underwear is always reliable—really comfortable, soft material, and a great fit. The waistband holds its shape and doesn’t dig in, and they keep their quality after many washes. Lightweight and breathable, perfect for everyday wear. They may cost more than other brands, but the comfort and durability make them worth it. Stylish, simple, and dependable—definitely recommended.”
Another customer wrote, “Good quality—my boyfriend ordered more since, saying they are extremely comfortable. They come packaged in official Calvin Klein packaging, making them a great gift.”
Not all feedback was perfect though; one three-star review warned about sizing: “The quality is good, but sizing seems off. I ordered a large, but they feel like a medium or small. Because of this, I can’t wear them or return them. In the right size, they’d easily be 4 or 5 stars, but the sizing issue is a major downside.”
Amazon’s Spring Deal Days run until 11:59 PM on Monday, March 16. No matter when you check the top 100 offers, you can bet the black Calvin Klein boxers will remain a steadfast bestseller.