City Threads Union Suit Thermal Underwear is a high-quality, made-in-USA product that combines warmth with breathability, making it ideal for both lounging and layering. The fabric is a soft cotton/poly mix, designed to be gentle on sensitive skin, which is a significant plus for children with sensory issues.

From user reviews, the fit can be tricky; many suggest sizing up as the suits tend to run small, especially in the torso. This was a common theme among parents of taller or leaner children. Despite this, the comfort level is highly praised. The fabric's softness and warmth are frequently highlighted, even though it's lightweight.

However, there are some concerns regarding durability. Some users noted that the fabric pills after several washes, which could be problematic for children with sensory sensitivities. Additionally, while the buttons are generally well-received for their size and ease of use, there were occasional complaints about them coming undone during sleep.

On the positive side, the thermal underwear is celebrated for its excellent stitching and overall quality. It holds up well through numerous washes and maintains its softness and shape over time. The fact that it's made in the USA also adds an extra layer of trust regarding safety standards and ethical manufacturing practices.

In summary, City Threads Union Suit Thermal Underwear offers a blend of comfort and quality that makes it a worthwhile purchase for parents looking for cozy pajamas or layering options for their kids. Just remember to consider sizing up to ensure the best fit!