My baby is 3 months, but is already fitting in 6 month clothes. Should I size up to the medium or stick with the small?

I would if your baby is taller than average. We use the M size and have since my little one was 4 months. They work great! She’s almost 7 months now and they still fit her well. She’s in the 97 percentile for height.

For a baby that’s 28.5 inches long which size is better?

I bought M. My baby is 10 month and 28”, we are currently using them and she still has room

My baby only gains a little over a pound a month and is currently 11.7 and 23.5 in long at 4 months. Should I get small or medium?

When I got mine my baby was 4-5 months old & weighed 13 lbs and was around 24 inches long. I got her medium. She is 6 months old now weighs 17lbs 27.5 inches long & she still has room. I liked hers being a little better because she still has room to move around & likes to have the “freedom” but if your kiddo likes to be a little bit more “snuggled” I would get small.

ASIN	B0C6M3WG44
Best Sellers Rank	#184 in Baby ( See Top 100 in Baby ) #1 in Baby Wearable Blankets
Brand Name	Yoofoss
Closure Type	Zipper
Collection Name	All
Color	Cloud
Customer Reviews	4.8 4.8 out of 5 stars (7,846)
Fabric Type	100% Cotton
Fit Type	0.5 Tog
Global Trade Identification Number	06974796527031
Item Type Name	Baby Sleep Sack
Manufacturer	Shenzhenshi Aisifang Clothing Co., Ltd.
Material	Cotton
Occasion	Baby Shower
Pattern	Multi-pattern
Product Care Instructions	Machine Wash
Size	Medium
Style	0.5 Tog
Unit Count	3 Count

Baby Sleep Sack 0-24 Months Wearable Blanket 100% Organic Cotton 2-Way Zipper TOG 0.5 Toddler Sleeping Sack 3 Pack, Comfy Soft Lightweight

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