Pick Aspect of the job title refers to removing items from shelves. You go around the warehouse picking out items required to fulfil a customer's order. A packer packs the items and prepares them for shipping. Packers ensure the items are ready for transportation while pickers check if the order is complete.
"Clothing with Attitude" conveys a sense of boldness and confidence. It suggests that the brand's clothing pieces are designed to make a statement and exude a strong personality.