aluslakana

An aluslakana is a bed linen item placed directly on the mattress as the base layer under the rest of the bedding. In Finnish usage it can refer to a fitted sheet with elastic corners that grips the mattress, or to a flat base sheet used under other linens. The primary function is to protect the mattress from wear and staining while providing a smooth, even surface for sleeping and for layering with top sheets, blankets, or duvets.

Materials and finishes vary by season and preference. Common fabrics include cotton and cotton blends, flannel for warmth, and microfiber or sateen for a smoother feel. Some aluslakanae are treated for easy care or moisture management. The choice between a fitted and a flat base sheet depends on comfort, mattress depth, and washing routines.

Sizes align with standard mattress dimensions. In many markets, widths correspond to common bed sizes such as narrow, standard, and wide options, with lengths around the typical mattress length (often about 200 cm). Manufacturers may also offer tailored sizes for specific bed models.

Care typically involves machine washing on a suitable cycle, with common temperatures ranging from 40 to 60 C depending on fabric and care labels. Tumble drying on low heat or line drying is common, and fabric softeners or whiteners should be used according to material guidelines.

Etymology: alus means under and lakana means sheet, reflecting its role as the base layer of bed linen. It is one of several terms in Finnish bed linen vocabulary.