When Toddlers Start Escaping: Sleep Sacks, Cots, and Safe Sleep Transitions

Many parents are surprised the first time their toddler manages to take off a sleep sack or attempts to climb out of their cot. While every child develops at their own pace, these behaviors often begin sometime between 18 months and 3 years old, when curiosity, strength, and problem-solving skills suddenly take a leap forward.

Why it happens

Toddlers are wired to explore. As mobility and independence grow, they may experiment with zippers, buttons, and climbing. What starts as playful curiosity can quickly turn into a safety concern, especially if a child can get out of their cot unsupervised.

Signs your toddler might be ready to escape

• Pulling at zippers or trying to remove pajamas

• Swinging a leg over the cot rail

• Stacking toys or pillows to climb higher

• Calling out less and trying to “do it themselves”

Tips to help manage sleep sack escapes

• Try putting the sleep sack on backwards. Many parents find that placing the zipper at the back makes it harder for little hands to open during the night.

• Choose well-fitted sleepwear. A properly sized sleep sack without extra slack can reduce the chances of removal.

• Keep the routine calm and consistent. Predictable bedtime habits help toddlers feel secure, which may reduce restless experimenting.

What to do about climbing out of the cot

• Lower the mattress to its lowest setting as soon as your child shows climbing interest.

• Keep the cot clear of items like pillows, bumpers, or large toys that could be used as stepping stools.

• Consider the timing of a bed transition. If your toddler can consistently climb out, moving to a low toddler bed may be safer than repeated falls.

Balancing safety and independence

It’s normal to feel unsure when your child reaches this stage. The goal isn’t to stop development but to create a safe sleep environment while guiding them toward new routines. Small adjustments — like reversing the sleep sack or simplifying the cot setup — can make a big difference while your toddler learns boundaries.

Every child progresses differently, so observe your toddler’s behavior and adjust gradually. With patience and a few creative tricks, this transition can be a smooth step toward more independent sleep.