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Title: Fragile dust cover.
Review: I have a 20oz Sigg bottle with an Active Bottle Top. The dust cover, which is the dome-shaped plastic piece that pivots to allow you to drink, is incredibly fragile. I have broken two of these in the last month. I use the bottle while swimming and all I did, was to knock over the bottle on the pool deck while reaching for it. I didn't even drop it. To top it all off (no pun intended), the dust cover shattered into razor-sharp shrapnels, which cut my finger while I was cleaning up. Just imagine these shards on the pool deck with all these people walking about barefoot.The choice of plastic for the dust cover is a very poor engineering decision, given that the bottles are marketed to "Active" individuals.In general, the bottles are sturdy, albeit susceptible to dings, scratches and other exterior damage. Get a neoprene pouch if you must have a pristine exterior.
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