A side-by-side comparison based on expert reviews and community consensus. We analyzed the sources to figure out which one actually belongs in your cart.
Moon and Back wins on fabric purity and brand trust for the diaper-and-crawling crowd — organic cotton on sensitive baby skin is a real advantage, and the 3-pack value is hard to beat. But Old Navy's PowerSoft is the community's unanimous pick for older kids, with a fabric that genuinely rivals $40 leggings and tall sizing that solves a real problem nobody else addresses at this price. The 6-point consensus score gap (78 vs 72) reflects that Old Navy serves a wider audience better.
Soft organic cotton in a convenient 3-pack makes these the go-to baby leggings for parents who want
Old Navy's PowerSoft fabric is beloved by parents and kids alike for being ultra-soft, durable, and
Moon and Back tops out at toddler sizing, full stop. Old Navy runs from toddler through teen, which means it's the only one of these two that grows with your kid past age 3. If you're buying for a 6-year-old, Moon and Back isn't even an option — this comparison is over before it starts.
Moon and Back uses certified organic cotton — no synthetic fibers, no chemical treatments, which genuinely matters for babies whose skin is more permeable and reactive. Old Navy's PowerSoft is a synthetic-blend fabric engineered to feel impossibly smooth, and it delivers, but it's not organic. For a crawling infant, organic cotton is the right call. For a 10-year-old doing cartwheels, PowerSoft wins on performance and durability.
Parents of long-legged kids know the specific frustration of leggings that hit mid-calf by November. Old Navy offers tall/long lengths online — something almost no competitor does at this price point. Reddit parents specifically call this out as the reason they keep coming back. Moon and Back doesn't address this at all, because its sizing stops before the problem even begins.
Moon and Back sells three leggings for $15, which is $5 a pair — exceptional for organic cotton. Old Navy sells individual pairs at $15–$25, though frequent sales can push that lower. For babies who need constant outfit changes, the 3-pack model is smarter. For older kids who are harder on clothes and need specific fits, buying singles lets you replace what wears out without restocking everything.
Moon and Back wins on fabric purity and brand trust for the diaper-and-crawling crowd — organic cotton on sensitive baby skin is a real advantage, and the 3-pack value is hard to beat. But Old Navy's PowerSoft is the community's unanimous pick for older kids, with a fabric that genuinely rivals $40 leggings and tall sizing that solves a real problem nobody else addresses at this price. The 6-point consensus score gap (78 vs 72) reflects that Old Navy serves a wider audience better.
