It’s cold in the basement at night and I always worry about Sprinkaan staying warm enough, even in his fleece footie pajamas. He had grown out of his infant sleepsack and I don’t like putting blankets on babies while they’re sleeping. Time for a new sleepsack!
The zippers I have for the infant sleepsacks aren’t long enough to go around the outside edge of the sack in a larger size, so I had to go with a center-zip design. I used a toddler’s jumper pattern for the top part of the sleepsack and the basic flared shape, just continuing then in a straight line to a couple inches past the length of the zipper. Like all my sleepsacks (some of which are for sale in my newly reopened etsy store), quilt batting is sandwiched between the print fabric and a white lining fabric. None of the zipper edges are exposed and all seams are encased.

Putting in the lining takes a bit of thinking where everything is inside-out and twisted for awhile.
I found a super cute rocket ship fabric and bought just over a yard of it.
The zipper is 36″ long which makes the sleepsack pretty generous, lengthwise. I put two sets of snaps on the shoulder straps to accommodate future growth.
I’m seeing Sprinkaan using this to at least 3 years old, by which time he’ll be able to keep his covers on without suffocating himself.
Back when I made this (and took the pictures) Sprinkaan was not yet walking. He does walk now and, while I don’t put him in his sleepsack until he is in bed, he does toddle around his crib in it a bit. It pulls at his shoulders a little when he tries to walk in it, but doesn’t seem to trip him up too badly. When he gets older, he’ll learn how to put his feet in the corners and walk in it like his siblings do in their sleeping bags.