The Matty M Women's Button-Up Romper is a casual yet versatile one-piece from Matty M®, a brand known for comfortable, everyday womenswear sold exclusively at Costco. Crafted from a linen blend fabric (approximately 55% linen and 45% viscose) at a midweight of around 210 GSM, it offers breathability and a relaxed, effortless look suited for warm weather.

The romper features a front button closure with a spread collar, short sleeves with cuffs, and a removable tie belt at the waist. A back waist elastic insert provides a comfortable, adjustable fit. Front chest patch pockets with flaps and side seam bottom pockets add functional style details. The inseam measures approximately 4.5 inches. Available in sizes Small through XX-Large (S = 4–6, M = 8–10, L = 12–14, XL = 16, XXL = 18–20). Reviewers note this style runs small — sizing up one size is recommended for a true-to-size fit.

Care instructions: Machine washable; hang dry; do not bleach; cool iron if needed; do not dry clean. Made in Vietnam.