Besides 16x16, common sizes shown in listings include 12x20 inches, 18x18 inches, and 20x20 inches. Availability depends on the specific product line.
Most 16x16 throw pillow covers use a hidden or invisible zipper for easy insertion and a clean, finished look.
Care instructions commonly recommend machine washing or hand washing on a cold/gentle cycle and drying flat or by line/hang drying. Some listings also allow tumble drying on low—follow the product label for the final guidance.
No — these 16x16 pillow covers are sold as covers only. Product descriptions indicate they do not include pillow cores, fillers, or inserts.
A 16x16 throw pillow cover measures 16.0 inches by 16.0 inches, listed in product details also as 16 x 16 inches (40 x 40 cm).