This swaddle can be used from 0 months old ◡̈♥︎ I've used it a few times, and there's no pilling! Afterwards, the neck area became slightly yellowed during storage, but it's not a stain from use (﹡ˆᴗˆ﹡) I purchased it in June 2025!! It's a used item, so please understand and consider purchasing (﹡ˆᴗˆ﹡)