Businesses in the women's underwear category sell garments designed to be worn next to the skin or beneath everyday clothing. Their ranges commonly include bras, briefs, knickers, thongs, camisoles, vests and bodysuits, in different cuts, fabrics and levels of coverage. Some shops also stock specialist items such as maternity and nursing bras, post-surgery underwear, sports bras, shapewear and lingerie sets. Customers may be able to choose from everyday cotton basics, seamless styles, occasion lingerie and nightwear, including dressing gowns and pyjamas. Retailers may offer bra fitting or advice on sizing and styles, as well as online ordering, exchanges and delivery. Products can vary in size range, support, fastening, colour and material, with options such as lace, satin, microfibre and natural fibres. Some businesses focus on practical essentials, while others provide a broader selection of lingerie and sleepwear.