Both Sub45 and Sub90 come in 2 sizes: XS-S and M-L-XL. They accommodate a range of sizes. To find yours, measure 2 inches below the pectoral muscles/ band line. See how to measure here. If you are borderline, consider thickness variations (jacket, etc) between summer and winter runs.
It is worth spending 30 seconds to properly adjust FITLY to your body shape. If the thoracic belt is too loose, the retraction force will be weaker, and items may shift. Too tight and you may feel uneasy. Position the thoracic belt 2 inches below your pectoral muscle / band line.
Tip: it should feel snug, not tight.
You go through a lot when you run. Your zippers too! With proper maintenance, they’ll perform for decades. Without, they can lock up. Read the blog that explains how to care for your zippers. You’ll be thankful you did!
Wash with mild soap. Rinse with lukewarm water. Many runners take FITLY with them in the shower post workout. Do not use your washing machine. It will rub the water-resistant coating off. Hang upside down to dry, zippers open. Insert some paper towel in the pockets to speed the drying process up if you need to.
Sub90 comes with a FLASK500. Suction creates a vacuum pulling the liquid out, not gravity. Having a tight seal is important. Make sure the attachment to the flask is tightly fastened. If not properly screwed on, air can seep through and you won't be able to drink the whole volume. Use natural oil on the flask’s thread and screw cap to increase the seal. The mouthpiece at the end of the tube has a liquid flow stopper. Twist to open or simply pull.
Tip: Dry your FLASK500 upside down. Insert a wooden spoon (or similar object) to enable air circulation inside the flask.
-FLASK150 fits in the front pockets of all FITLY, except the Sub90 XS-S when filled completely.
-FLASK500 comes with every Sub90 and does not fit the Sub45.