Best for travel · Blackout curtains
Sleepout Portable Blackout Curtain 3.0
by Sleepout
Packable 100% blackout panel that fixes inside the window frame with locking suction cups and hook-and-loop edges. No drilling or rods.
Specs
| Blackout claim | 100% (vendor; Intertek listed) |
|---|---|
| Light-blocking layer | Blackout fabric, white backing |
| Sizes | 62 x 40 in; XL 86 x 54 in |
| Mounting | 2 locking suction cups + hook-and-loop edges |
| Independent light test | None found |
| Weight | About 1 lb |
| Certification | GREENGUARD Gold, OEKO-TEX Standard 100 |
| Included | Panel, 2 suction cup mounts, carry bag |
| Warranty | 365 days |
| Care | Machine wash, hang dry |
Specs from the manufacturer and the sources listed below. Last verified Oct 20, 2026.
Good
- Installs inside the frame with no tools or rods; Sleepout calls it damage-free
- Hook-and-loop on every edge, so it can hang vertically or horizontally and be folded to fit
- Packs into a carry bag at about 1 lb
Not so good
- $129 for one panel, the highest listed price in this category
- Suction cups need smooth glass; some buyers on Sleepout's page say they loosen and leave a gap at the top
- Covers only the glass, so frame edges can still leak light unless you add the adhesive mounts
The Sleepout is the travel blind to buy if you will use it often. You lock two suction cups into the top corners of the glass, attach the panel’s hook-and-loop strip to them, then fold the edges in and close any existing blinds or curtains over it. There is no rod, no drilling and no adhesive unless you choose to add Sleepout’s optional mounts.
Sleepout says its fabric is 100% blackout and that Intertek lists it as “100% Blackout Light Blocking”. It is GREENGUARD Gold and OEKO-TEX Standard 100 certified, and Sleepout says the white backing reflects sunlight. The standard panel is 62 x 40 in; the XL is 86 x 54 in for tall or patio windows. Measure the visible glass, not the trim, and choose a panel larger than it.
Fit is the catch. The panel covers glass, not the window frame, and suction cups need clean, smooth glass to hold. Some buyer reviews on Sleepout’s own page mention cups loosening over time and leaving a gap at the top.
For windows split into two panes or sliding sections, Sleepout recommends a separate curtain for each. Sleepout itself suggests its adhesive mounts for total darkness.
It costs $129 for one panel, marked as a limited-time price against a $150 list price, and less each when you buy two or four. The Amazon Basics portable shade also uses suction cups, but it is a plain unlined polyester panel with no stated blackout percentage. The Sleepout comes with a 365-day warranty and free shipping over $99 in the contiguous US.
For a permanent bedroom setup, curtains plus a blind will usually beat any portable panel on darkness at the edges.