The Duolight Lilith Thermal is a day-and-night blind sold by Blinds 2go, available in 12 colours starting from £14.80. What sets it apart from a standard day-and-night is the thermal backing - a layer added to improve insulation against heat loss, making it a reasonable choice for anyone who wants both light control and some help against draughty windows. The made-to-measure format means it can be cut to your exact window dimensions rather than trimmed down from a standard size.

Who it suits

Day-and-night blinds work by layering alternating sheer and opaque stripes of fabric. Align the stripes and the blind filters light while keeping the room visible; stagger them and you gain privacy with the room dimmed. That mechanism makes the Lilith Thermal a reasonable candidate for living rooms and bedrooms where you want to adjust the mood through the day without fitting two separate blinds.

The thermal backing adds modest insulation over a plain fabric. It will not perform like a cellular blind - a honeycomb structure traps air in a way a flat thermal backing cannot match - but it is a meaningful step up from a standard day-and-night if heat retention is part of what you are looking for. Rooms with older single-glazed windows or poorly fitting frames are the cases where any added thermal layer earns its keep most readily.

One honest limitation: day-and-night blinds do not achieve genuine blackout. When the opaque stripes are fully staggered the room will darken usefully, but light still passes around the stripe edges. If you need complete darkness - for a young child's bedroom during long summer mornings, for example - a blackout roller with side channels will serve you better than any day-and-night.

The colours

12 colours available

Blinds 2go has selected a noticeably soft, lifestyle-leaning palette for the Lilith Thermal. The twelve options split across warm tones - Russet, Blush, Gold, Mulberry - and cooler hues - Duck Egg, Peppermint, Aegean, Aqua, Lavender, Aloe, Dove - alongside Citrine for something brighter. There are no deep neutrals like charcoal or slate, and no stark whites; the palette is built around muted, liveable shades that suit bedrooms and living rooms more than kitchens or home offices.

That focus on softness means the range is well matched to rooms you want to feel calm. It also means those decorating with stronger or more contemporary palettes may not find an exact match here. Dove sits closest to a neutral, though it reads as warm rather than cool grey.

Price by your dimensions

Enter your window size. We round up to the next standard size, which matches how the retailer actually quotes you.

At under £15 for the smallest sizes, the Lilith Thermal sits at the accessible end of the market for a day-and-night blind with a thermal finish. Pricing scales with width and drop as the blind is made to measure, so larger window sizes will move well above the entry price - but the base figure makes it worth checking against your actual dimensions before dismissing it on cost grounds.

How it compares

Within the day-and-night category, the thermal backing is the distinguishing factor here. A standard day-and-night at a similar from-price will give you the same light-control mechanism but without the added insulation layer. If thermal performance is not a priority, a standard day-and-night or a light-filtering roller may offer a wider colour range for the same outlay.

If you need stronger insulation, a cellular or honeycomb blind is the more effective choice - the sealed air pocket in a double-cell structure measurably reduces heat loss in a way a flat backing does not. The Lilith Thermal occupies a sensible middle ground: better than nothing for thermal retention, without asking you to give up the day-and-night stripe mechanism you came for.

A note on care

The polyester fabric used in most day-and-night constructions responds well to light vacuuming with a brush attachment to remove dust. For marks, a damp cloth with a small amount of mild soap is generally sufficient. Avoid soaking the fabric, as this can affect the coating that gives day-and-night blinds their structured stripe effect.