I like these inserts because they are oversized for use in the standard 26" Euro pillowcase. Accordingly, they fill out the Euro case nicely. When leaning on them, they feel more like a polyester fill pillow than a down pillow (not the same lovely "sinking in" feeling you get with down).
I selected these based on another reviewer who said these worked great with her 26" shams. I am sorry I listened to that advice against my better judgment. I am not happy with the result of my 26 12/" square shams and these slightly larger inserts, but as they are primarily decorative, I'll live with it.
Purchased these for the European covers included in my comforter set. The pillows are nicely covered and plump. The price is good. They are basically used as decorative, not for sleep. Pillows fit the covers as expected. Will plop up nicely and tall enough to cover the headboard. I recommend this product for the price and quality.
I'm happy with the pillows, they are in 26" square euro shams. I have them on my bed. They are not squishy and soft, but filled and soft; great for decorative pillows to lean on. The pillows are stitched closed--- no insert with zip cover like the Candice Olsen king,queen, and standard pillows (that I'm really impressed by). They should last for decades.