Sleeping bag or suit for 4 month old? What do they wear?

[flowertea]

Not a FTM but my older children are much older and I forget.

DD is 4 months and beginning to roll. Currently in a swaddle but with arms now out but she's too big for it now.

I saw sleeping bags are recommended. If she rolled onto front wouldn't a sleeping bag prevent her from getting traction to get back onto her back? Or am I overthinking it? Would a suit with legs be better?

Help needed!

DS has been is sleep sacks and no issues he can roll over no issues even when he was learning to roll.

Unless your sleep sack was made of teflon there's no reason it should have any less traction than anything else they wear to bed.

The sleeping bags are great. Mine can crawl and walk in his. Rolling was never a problem!