All work trousers bristle with pockets at all manner of angles and heights. This should accommodate your personal preferences and the demands of your specific task. Many also have tool loops.

MyShoeStore Mens Formal Trousers Casual Business Office Work Home Belted Smart Dress Pants Straight Leg Flat Front Everpress Pockets Waist Sizes UK 30 Inch...
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Amazon Essentials Men's Classic-Fit Wrinkle-Resistant Flat-Front Chino Trouser (Available in Big & Tall)
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