Amazon Basics Throw Pillow Insert, 18 x 18 in, Down Alternative, 2-Pack

The FAQ at the bottom of this guide asks whether you need new inserts, and the answer for most people is yes, because the ones that came inside decorative pillows years ago have collapsed. These are the plain-vanilla answer: 18 by 18 in, two to a pack, down-alternative fiberfill, machine washable, hypoallergenic, and they match the Cafl covers above exactly. Buying covers and inserts together is also the cheapest route to a whole sofa refresh, because you keep the inserts and swap prints by season rather than rebuying the pillow each time.

Good to know: 4.0 stars across more than a thousand reviews, and the low ones say the same thing: they arrive vacuum-compressed and look thin and under-filled out of the bag. Beat them into shape and give them a day to loft. If you want the plump, fully-stuffed look in photos, put a 20 in insert in an 18 in cover instead - that is the actual trick, not a better insert.

As featured in our guide Floral Chintz Throw Pillow Covers: Grandmillennial Picks for 2026.