Does it keep drinks cold or hot?

It has double-wall vacuum insulation plus a copper lining, which is the standard build for keeping drinks cold for hours and hot for a few. The maker does not publish specific hour ratings, so treat claims as typical for this construction.

Can I brew tea in it?

Yes. The removable infuser basket holds loose-leaf tea or fruit, so you can brew in the bottle and lift the basket out when the strength is right.

Is it dishwasher safe?

The stainless interior and infuser are generally fine to wash, but the bamboo exterior should be hand washed and dried promptly. Soaking or dishwasher heat can warp, crack or discolor the wood.

How does it compare with an all-stainless bottle?

It insulates the same way but adds a bamboo sleeve and an infuser. The trade-off is that bamboo needs more care and is less forgiving of drops than bare stainless steel.

The bottle and the removable infuser basket. No straw or spare lid is listed.

It is a mid-size bottle, good for a commute or desk refill but small for long hikes or all-day gym sessions. Expect to refill more often than with a 24 oz bottle.