Using the SpeedDraw 2 Insulated Handheld Flask is a breeze. Just fill it up with your favorite drink through the opening. When you're thirsty, simply hold the flask and squeeze gently to get a quick sip. To store your stuff, put your phone in the power mesh pocket and zip up your keys or credit cards in the small pocket. When it comes to maintenance, clean it regularly with warm soapy water. Make sure to dry it thoroughly before using it again. Don't put it in the dishwasher as it might damage the insulation. Also, avoid over - squeezing the flask to keep its shape intact.