It's very waterproof, warm, good fit etc. The only negatives are it's quite a heavy rug, and doesn't dry that quickly, especially compared to rambo's and rhinos
I have the old style Arion full neck - been excellent for past 4 years but now is looking a bit old - its never leaked or anything but the filling inside seems to have bunched up over the quarters, so I bought a Rambo Duo but TBH I wish Id bought a new Arion at this rate...!