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Babies may be little balls of sunshine but most adults in their lives will attest that they toggle regularly between sour and sweet. A surefire way to usher in that sour mood in abundance? Disturbing their sleep patterns and schedules in even the slightest way. This is especially so when babies sleep away from their regular environment — like overnights at a grandparent’s house or in a hotel for a family trip.

Thankfully, according to loads of relieved parents and grandparents, the SlumberPod blackout crib tent is a tremendously impactful hack for helping kids get sweet sleep much faster. Reviewers are noting in droves that this beauty is “ worth every penny ” and, finally, it’s 20% off ! If you know anything about children , then you’re aware of the mostly unbendable rule: When they don’t sleep, you don’t sleep. That’s why so many parents and grands count on this tent to save the day.

Considered an at-home and travel essential by several reviewers, this crib tent — a Shark Tank product, by the way — offers a blackout cover that helps create an ultra-dark environment for children to fall asleep faster and sleep more soundly. It’s all thanks to a synthetic blend of down and wool material that blocks out 95% of the bright light that .