The UltraFlask™ 500 soft flask is an ideal compliment to the Endurance Pack, HydraQuiver Vest Packs, Gear Vest, Adventure Pack and PFV series of Orange Mud products. You can quickly stash the flask in your front chest pocket for access on the fly plus it comes with an optional use 4" hose. Quickly take it off if you just want the bite valve, or if you want the hose leave it as is! 
Features
BODY CONFORMING SOFT FLASK - Soft flask, super soft material conforms to any pocket
ANTI-SLOSH - Shrinks as you drink, reducing water sloshing
VERSATILE DESIGN - Use with or without tube, option to mount bite valve directly to cap
FULL SIZE ICE CUBE FRIENDLY - 42 mm sport cap with silicone bite-valve
Can be frozen or filled with warm water (max temp 140°F / 60°C)
Durable, built for a lifetime of tough use, No-Leak™ Guarantee
Specifications
CAPACITY: 500ml / 17oz
WEIGHT: 1.4 oz (40 g)
DIMENSIONS:  7.25 x 2.6 (20.96cm x 6.6cm)
MATERIAL: 0.25 mm TPU, HDPE, 100% BPA and PVC Free
Care Instructions
Rinse before use. Dishwasher safe (top rack recommended).
Note that the hose is held in place by a press fit plug on the bottom of the cap. If you want to take it apart to clean, just pull the hose firmly off the cap, being careful not to lose the plug.