
Last updated: March 2026
The Simba Aerodown pillow is Simba's most affordable pillow at £60. It uses Stratos cool-touch technology on one side of the cotton cover and is filled with Renew Bio clusters made from recycled plastic bottles. It's hypoallergenic, machine washable at 40°C, and certified GenM Menopause Friendly. Sign up to Simba using our referral link and get two Aerodown pillows free when you spend £300 or more on a mattress.
The Simba Aerodown pillow sits at the entry point of Simba's pillow range, but it still packs in their signature cooling tech. One side of the cotton cover features Stratos technology, which absorbs excess heat and wicks away moisture to keep your head cooler through the night. According to temperature testing carried out by Swiss materials specialists HeiQ, the Stratos-treated fabric stays up to 3°C cooler than non-treated fabric.
Inside, Simba use their Renew Bio clusters — fibres combed from recycled plastic bottles into soft, airy layers. The result is a down-like feel that's entirely cruelty-free and hypoallergenic. If you're sensitive to traditional feather or down pillows, this is a genuinely comfortable alternative.
Stratos cool-touch technology regulates temperature on one side of the cover, making it particularly useful for warm sleepers and during summer months. The Renew Bio fill provides medium-soft cushioning that suits side and back sleepers well. The pillow is also officially GenM Menopause Friendly, meaning it's been certified to ease at least one of the 48 recognised symptoms of menopause.
The entire pillow is machine washable at 40°C on a delicate cycle, and you can tumble dry it on low heat. Simba recommend reshaping while damp for the best results. The standard size is 50 x 75cm, so it fits regular UK pillowcases. It also comes with a reusable storage bag, which is a nice touch if you're packing it for travel or storing it away.
It's worth noting what the Aerodown does not have. Unlike Simba's Hybrid pillow (£109), the Aerodown is not height-adjustable and does not contain Nanocube foam inserts. If customisable firmness is important to you, the Hybrid is the better pick. However, if you want a simple, cool, comfortable pillow at a fair price, the Aerodown delivers.
Simba currently bundle free pillows with mattress purchases. When you buy an Essential Hybrid mattress (or any Simba mattress priced at £300 or more) through our referral link, you'll receive two Aerodown pillows at no extra cost. Single-size mattress purchases receive one pillow instead of two.
This offer runs alongside Simba's seasonal promotions and cannot be combined with other discount codes. Terms are set by Simba and may change, so always check the latest details at checkout.
Get two free Aerodown pillows with a mattressJust want the pillow on its own? You can also pick up the Simba Aerodown pillow from Amazon, where it's often available at a discount from the £60 RRP.
Buy on AmazonAt £60, the Aerodown sits in competitive territory. Comparable options like the REM-Fit Cool Gel pillow come in at around the same price, while the Otty Adjustable costs £70 and Simba's own Hybrid pillow is £109. Cheaper alternatives exist — Panda's Memory Foam Bamboo pillow is around £45 — but they lack the Stratos cooling layer that sets the Aerodown apart.
For the price, you're getting genuine cooling technology, a hypoallergenic recycled fill, and a machine-washable construction from a certified B Corp brand with over 350,000 five-star reviews globally. If temperature regulation is your main priority in a pillow, the Aerodown justifies the spend. However, if you want adjustable height and firmness, the pricier Hybrid pillow is the smarter investment.
Yes. You can machine wash the entire pillow at 40°C on a delicate cycle. Reshape it while damp and tumble dry on low heat for the best results.
No. The Aerodown uses a fixed Renew Bio cluster fill and is not height-adjustable. If you want to customise firmness and height, look at the Simba Hybrid pillow, which includes removable Nanocube inserts.
The Aerodown measures 50 x 75cm, which is a standard UK pillow size. It fits regular pillowcases without any issues.
Yes. The Stratos cool-touch technology on one side of the cover actively draws heat away, keeping you up to 3°C cooler than a standard untreated fabric. It's also officially GenM Menopause Friendly for those experiencing night sweats or hot flushes.
The Aerodown (£60) is simpler — fixed fill, medium-soft, with Stratos cooling. The Hybrid (£109) adds removable Nanocube foam inserts for adjustable height and firmness, plus a Which? Best Buy award. Both feature Stratos technology and Renew fill.
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