A daybed is made up of three major components: frame, mattress support, and optional trundle.
The frame consists of three pieces: two side panels and one back panel; which are commonly available in wood, metal, or a wood/metal combination. They are designed to accommodate a standard twin size mattress, 39 in. x 75 in.
A link spring is the most common mattress support. It is a metal grid-like structure with springs that substitutes for a box spring. The link spring attaches to the two side panels of the daybed frame to create a strong, stable bed. This is what the twin mattress rests on allowing room below for the optional trundle bed and additional mattress.
A slat system is the other less common mattress support. This system is very similar to many full size bed slat systems where wooden slats are attached to the front and back rails of the bed to support the mattress.
A Trundle is an extra mattress frame stored beneath the link spring of a daybed, and when needed slides out to provide additional sleeping space. There are two types of daybed trundles, a pop-up trundle or a drawer trundle.
Pop-up trundles are more popular because they can transform your twin size daybed into a king size bed. Pop-up trundles are made of metal. They can be left in the lowered position or elevated in the pop-up position to align with the primary daybed mattress.
Drawer trundles or slide out trundles are typically specific to a bed so the drawer dimensions are just the right fit for the daybed. Drawer trundles hold a twin size mattress, but do not elevate. Drawer Trundles can also be left empty and used for storage.
A mattress and bedding complete the look and feel, turning it into a versatile piece of furniture. All daybeds and trundles are made for a standard twin size mattress, 39 in. x 75 in. There will be a slight gap between the mattress and the sides of the bed. This allows you to put bedding on the mattress.
Bedding sets consist of a comforter, three shams, and in some cases a bed skirt. This choice makes the daybed look like a bed, so you get a multi-layered frilly look. The difference between a Daybed comforter and a Twin Comforter is - size: Daybed Comforter ( 52w x 99L) Twin Comforter is- 62w x 86L.
Daybed covers are an alternative to bedding. The fabric lies directly on top of the mattress, and drops all the way from the mattress top to the floor on the front three sides. The appearance of a daybed with a cover is more of a sofa than a bed. Covers give the daybed a more tailored, modern, sleek look.