I have a small (0-6mos) blue HALO infant sleep sack. It is 100% cotton (not fleece). This is the sleepsack endorsed by the SIDS Alliance. It is sleevless to prevent overheating and zips from top to bottom to make nightime diaper changes easier.
These sell new for $25-$30. Mine is in excellent condition. Asking $15 ppd.
Paypal only - Please PM if interested - Thanks!