This is a great 3 seasons Hat! Our Tec-Wool Hat uses c_change„ by Schoeller® Switzerland technology membrane to ensure constant comfort. What is c_change® technology? Much like a pinecone, the c_change„ technology membrane opens when the outside temperature rises, and close again when the temperature drops. Look forward to: Constant comfort - c_change„ works to maintain an even temperature Keeping warm - discreet tuck away ear warmers can be pulled down in cool weather Staying dry - fabric repels both rain & snow Additional Features: Guaranteed for life Hydrofil® sweatband to wick moisture away Keep valuables safe in the secret pocket Made in Canada Brim size: Front: 2 5/8"; Back: 2 3/4"; Sides: 2 1/8" Weight: 4.8 oz / 136 g Fabric: Black: 71% wool; 18% polyester; 12% polyurethane Care: Dry Clean Only