These are Uniqlo denim pants. Size: 130 The waist is elastic. There's also a button, so the fit can be adjusted (see photo 5). They're stretchy and easy to wear, and the color is versatile for year-round use. The following is AI-generated: UNIQLO dark blue straight pants with a comfortable elastic waist. - Color: Dark blue - Style: Straight pants - Waist: Elastic waist - Brand: UNIQLO Thank you for looking.