My little one has sensory issues, and socks are by far the biggest issue, making for extremely stressful mornings.

Over the past three years, I've tried every single "seamless", "smooth-seam", "comfort-seam" socks out there  most of which she wouldn't even wear inside out. I knew about SmartKnitKIDS, but it went against my belief (not to mention my budget! ) to spend $10 on a pair of socks. Retrospectively, I agree that it would have been cheaper to start with them rather than trying everything else to no avail...

As some have mentioned, they're not perfect:
- They make feet sweat (and smell, depending on shoes)
- They still have a seam (although barely perceptible to people who don't have sensory issues)
- They don't wash very well and the outside tends to "pill" and gets rough (so make sure to always wash them on the same side)
- They're not very long lasting (you'll get a few months out of them)
- Design is inconsistent across sizes/colors (some colors/sizes have "cuffs" with seams and look like they're made of a different material)

But they're still the best (only?) socks out there for kids with sensory issues.

The no-heel, "tube" format makes them great for any foot size. My 4 year old wears shoe size 11. The Large socks reach up about 5 inches (without pulling).

In conclusion: If you have a child with serious sensory issues, don't hesitate. Those are the best socks you'll find. But be prepared to spend  money on them, not keep them for long, be careful how you wash them, and return some of the ones you'll receive because they're an older model (different material, different design).

Pictures: Large purple compared with Small white.