Gelled MicrofiberÂ™ offers the benefits and feel of down, however skipping out on the smell, pokiness of feathers, and allergenic tendencies. There is a half-inch memory foam layer on one side which offers a firmer feel when sleeping on that side. Dual-Comfort Technology provides a more versatile sleep solution by offering varied levels of support. The siliconized tiny microfibers combine to create a consistent, resilient, and traditional filled pillow feel. Unlike down, the filling will not clump and doesn't flatten and go limp over time. The contents are naturally antimicrobial and resistent to dust mites and allergens. The breathable construction will maintain a comfortable sleeping temperature. The traditional size and shape fits pillowcases and unlike some speciality pillows, ties in well with bedding decor. This pillow features a super soft microfiber cover and boasts a 3-year warranty. King size pillow includes: one 35" x 16" pillow; Queen size pillow includes: one 29" x 16" pillow; Standard size pillow includes: one 25" x 16" pillow.