The pillar on the base part that comes through the hole in the cover allows you to press the base out again after snapping it in place
To make a telescopic rod, sections of graphite are cut so that they can be stacked over each other to slide out for a full-length rod

360-Degree Reflectivity Bottom Compression Comfortable, Padded Top Grab Handle Daisy-Chain Webbing Offers Lash Points External, Fleece-Lined Pocket For Sunglasses, Phone Or Keys Front Compartment Has Internal Organization With Secure-Zip Pockets And A Padded Tablet Sleeve Large Main Compartment For Books And Binders Protective Dedicated 16'' Laptop Compartment Removable Waist Belt Stand-Up Design For Easier Loading And Unloading Sternum Strap With A Whistle Buckle The Luxe Edition Features A Premium, Metallic Embroidered Logo And Metallic Zipper Pulls The Women-Specific FlexVent Suspension System, Certified By The American Chiropractic Association, Has Articulated Shoulder Straps, A Rounded Back Panel, Comfortable Stitch Lines And Soft-Touch Chemise Fabric Two Durable Water Bottle Pockets Can Easily Double As Multi-Use Pockets With Quick-Draw Smartphone Access On One Side Two External J-Zip Pockets, One Lined With Fleece 210D Recycled Nylon Ripstop With Non-PFC Durable Water-Repellent (Non-PFC DWR) Finish Avg Weight: 2 lbs 10 oz (1180 g)Dimensions: 12'' x 6.5'' x 19.5'' (30.5 cm x 16.5 cm x 49.5 cm)Volume: 1892 in (31 liters)Laptop Sleeve: 14.5'' x 11.5'' (36.8 cm x 29.2 cm)

The swimming action is unbeatable, and models are available in floaters, slow sinkers (one foot of sink every three seconds), and fast sinkers (one foot of sink for every second)