swaddle transition

Kristen
We already swaddle my LO with one arm out and she is close to rolling back to tummy. The problem is that is we swaddle her with both arms out the product we use doesn't give that same snug feeling. What products do you recommend for swaddle transitioning that allow one arm out. Looked at the zipadee zip and they don't have that option. My LO is 4 months.