Mirabella is Swift Direct Blinds' Perfect Fit roller: the blind arrives built into a slim frame that clips onto the beading of a UPVC window or door, so there is no drilling, no screws and no visible fixings, and the format is cordless by construction because the fabric runs inside the frame. The range covers 13 colourways from £45.89, and its chart hides something unusual for the format - a run of Solar Crush fabrics, which bring a screen-style weave to a clip-in blind normally sold in plain cloth.
Who it suits
The format does the recruiting here. If you rent and cannot drill, if your frames are UPVC and you would rather keep them unmarked, or if the window is a tilt-and-turn that would swing into any conventionally hung blind, a Perfect Fit settles the problem at a stroke - the blind travels with the sash, stays parallel to the glass and never swings loose. The absence of operating cords also answers the child-safety question in a nursery without a tensioner in sight. The catch is that the format needs what it is named for: UPVC frames with accessible beading and enough depth for the clips, which generally rules out timber and aluminium windows. Measure the way the listing asks and check your frame depth before ordering; the perfect fit guide covers how the format works and where it does not.
The colours
13 colours available
The thirteen colourways fall into two camps. The plains - Coral, Marble, Mint and Perla Black among them - behave like ordinary roller cloth in cheerful colours. The more interesting half is the Solar Crush series: Espresso, Lemon, Mint Green and Concrete Grey, fabrics whose name signals a solar-screen character, the open technical weave that tempers glare and softens heat while keeping a sense of the view. That fabric type is usually sold on standard drilled rollers, so finding it in a clip-in frame is uncommon; the solar screen guide explains how the weave behaves through the day. Order samples either way, and hold the Solar Crush swatches up against the light - screen fabrics are chosen for how they filter a window, not how they look flat on a table.
Price by your dimensions
Enter your window size. We round up to the next standard size, which matches how the retailer actually quotes you.
Price around its usual level (checked since 2 Jun).
A Perfect Fit blind is priced above a basic drilled roller of the same size, because the frame is part of the product, and the from-price here reflects that. Sizing is done on the glass rather than the recess, and the bill rises with the pane. Price your own measurements in the table above rather than extrapolating from the headline figure, and since the format is bought per pane, remember that a bank of small windows adds up differently from one large one.
How it compares
Against a standard drilled roller, you trade a little of the price advantage for a tidier install and a blind that hugs the glass; light control is much the same, though the frame closes most of the side gaps a hanging roller leaves. Against stick-on rollers, the other no-drill route, the clips engage the beading mechanically rather than relying on an adhesive pad, which is the more reassuring arrangement on a warm, south-facing window. The Mirabella name itself is not exclusive: it also appears at Shade & Story and So Easy Blinds, and prices for the same name differ between shops - our Mirabella comparison sets the versions side by side, and it is worth checking which format each shop attaches to the name before comparing bills.
A note on care
The frame takes a wipe with a damp cloth, and the fabric needs no more than a regular dust and the occasional spot-clean; the Solar Crush weaves hold little dust in the first place, one of the quiet virtues of an open screen cloth. Avoid soaking any of it. The whole frame can usually be unclipped in seconds when the glass behind needs cleaning - do it gently and refit the clips squarely, since they are the only thing holding the blind to the window.
Likely the same fabric, at other retailers
Mirabella roller blinds are sold under the same name by more than one UK retailer, and the price scales identically across window sizes - a strong sign it is the same fabric from the same supplier:
- Shade & Story from £45.00
- Swift Direct Blinds this page from £45.89
We match these on the shared name and an identical price curve, not an independent inspection, so treat it as likely the same fabric rather than confirmed - and check the specification and colour at each retailer before buying.