Brand: Yellow - Nishimatsuya, Gray - Uniqlo Size: Both are 100, but Uniqlo's are longer in length. Condition: The yellow Nishimatsuya ones have been worn fewer times, so they are in good condition. The gray ones were worn at daycare and for playing in the park, so there are some yellow stains on the seat. They also show signs of wear. The tags have names written on them, so I will cut them off before shipping. Please purchase only if you understand everything above.