I LOVE all the habitrail add-ons/accessories, the tunnels especially! There are endless creative possibilities when using these to expand your hamster's home, and I enjoy making crazy tunnel systems and secret hideaways for my hammy to explore! Highly recommended, I personally do not buy any other brand of cage/accessories. These are sturdy (when locked together correctly! read instructions) and fun to watch your hamster crawl through. :)

Pros: Fun way for your ham to tunnel around and explore

Cons: none, except when my hamster pees in them.. yuck! easy to clean, though.

When my kids were little we had Teddy Bear Hamsters.I and the kids could not stand for these little guys to be in such small confined cages.We saw these and next thing we knew we had an amazing maze that went from one end of the room to another,it was great !.Drove the cats nuts to see those little guys running though the tubes!

Pros: The kids and the hamster loved these.

Cons: Cats loved them too !!

My sister's kids had these for her hamsters and they chewed right through it.They looked all over the house for them for days and finally found them.

Pros: give them more room

Cons: can be chewed thru

I bought several of these for my hamster cages, I actually connected 2 cages together with these tubes, my hammies had a big twinhome/condo it was pretty awesome if I do say so myself. Could not have done it without the extra tubes.

Pros: FUN, FUN, FUN

Cons: Hard to clean, crack easily

This Habitrail system is one of the coolest things on the market for small rodents. The possibilities are just endless. These tubes are great to add on and create all kinds of nooks and crannies.

Pros: Unlimited design capabilities

Cons: None