**What is this descriptor of a bag?**

I know the first line is "Bag.", but what's the second?

[![enter image description
here](https://i.stack.imgur.com/yDtmB.jpg)](https://i.stack.imgur.com/yDtmB.jpg)
CC BY-SA 3.0
2015-09-06T13:40:05.843
27857
2019-02-26T00:49:47.100
9717
question
translation
What is this descriptor of a bag?
It says:

> ケロヨンストラップ[付]{つき}。 Comes with Keroyon (cell phone?) charm/strap.

ケロヨン↓

[![](https://i.stack.imgur.com/AzH8S.jpg)](https://i.stack.imgur.com/AzH8S.jpg)  
(source:
[naganoblog.jp](http://img01.naganoblog.jp/usr/n/a/w/nawateribbit/IMG_0912.JPG))
CC BY-SA 4.0
2015-09-06T14:18:16.463
27858
2019-02-26T00:49:47.100
2019-02-26T00:49:47.100
18772
9831
27857
answer