I don't remember the exact purchase date, but I think it's been about 4-5 years. [Quoted from the following site] Kastane's (Kastane) classic piping border long-sleeved version is now available. ■ Design: This is a short-length, stretch border long-sleeved T-shirt that allows you to arrange your usual style in a trendy way. The moderately wide border draws the eye upwards, making it a recommended item for adult casual styles that can be expected to have a leg-lengthening effect. The slim, stretchy material makes your body line look beautiful. It fits well, so it doesn't bunch up when used as an inner layer. ■ Coordination: The appeal is that it's easy to incorporate into your coordination, regardless of the bottoms, from fluffy skirts to slim pants. Because it's slim, you can wear it in good balance even when tucking it into wide pants. It's also lovely to show a glimpse of the border as an inner layer. This year, it's recommended to use it as an inner layer for a knit with an open collar. You can use it widely, both as a main item and as an inner layer, so you can use it for a long time.