STORY
Cool design multi function waterproof bike pack which can carry from behind your bike seat.   It is not only a carry bag, but it can also up to 20L of water.  
 
Material: 
0.12 TPU,  PP Board for the bag holder
 
Water proof level:
IPX7
 
Size:
30cm x 70cm
capacity up to 20L
 
Weight
750g