Features: See JL04 for full Rosemoor jacket features, Expander features~ Zips into Rosemoor Jacket JL04 durng pregnancy~Velcro and stud fastening for extra security~Elasticated bump section for stretch~Size adjusting toggles~Full-length storm flap for protection form the wind~Waterproof, windproof and breathable LTEC 10K fabric~Mesh lining for comfort and breathability EN343 Rating: 3, 3 Fabric; LTEC 10K 2-Layer 300D laminated polyester EN 343 3, 3 Fastener Jacket: YKK Main Zip, Expander: Zipped into jacket and secured with Velcro and Studs ISO 20471 Class: Jacket Class 3, Expander: When zipped into the Rosemoor jacket, the will conform to Class 3 as a whole (XXS certified to ISO 20471 Class 2) Length: 67-85 cm Lining: Polyester Mesh Lined Reflective Tape: Retromax Plus Premium Reflective Tape Sizes: XXS-4XL/5XL (Women's UK Size 6 - 22-24) , Expander: Order the same size as your Jacket