All ergoPouch pouches are double-stitched and dyed with a non-toxic water-based dye, and certified to be free from formaldehyde, phthalates and lead. Cared for properly, this product will last several years and can be used for more than one baby. Our TOGs don't lose their warmth ratings over time, but a gentle fluff up in the dryer on a low setting helps maintain the fibre's loft, allowing air to circulate through more effectively. If you've received a second-hand ergoPouch, check for loose threads, stable zips and any stretch around the neck before using.