A twist pile carpet is made from yarn that has been tightly twisted and set to form a pile with a slightly textured surface. Twist piles are produced in both plain and heather colours (Heathers are created using a combination of complementary coloured fibres to obtain a tonal effect).
In a loop pile carpet the yarn forms loops on the surface of the carpet, either in uniform height, creating a level loop pile, or with differing heights creating a textured loop pile. Variations include a rustic tweed style loop known as a Berber which contains highlight flecks. Wool loops are a popular alternative to coir and sisal matting because they have the added comfort, warmth and durability of natural wool.
Saxony carpets are longer dense pile carpets made to create a luxurious deep pile effect. Available in both wool and man-made fibres.