Operator Flex trouser pants by CAT. Made from a breathable weave that offers plenty of flexibility, these workwear pants feature stretch panels and utility pockets. Zip fly; button closure. Historically rooted in the resource and construction industry, CAT knows workwear. CAT WWR is Caterpillar Workwear redefined, capturing the true spirit of American workwear with everyday products that focus on authenticity, ingenuity and craftsmanship.