Now Available! ADD-ONS
Finally, we're excited to announce that ADD-ONS are a go! You can now add-on Replacement Purifier Cartridges ($22.25ea) and 32oz Howlers ($42.25ea) to any pledge of $27 or more.
For those of you who have backed Kickstarter projects before, the process should be familiar. For those of you who haven't, the process leaves a little to be desired but it does work. ;)
To ADD-ON to your current pledge, just click "manage" (your pledge); then click "change your pledge", and adjust your "pledge amount" to the amount reflected in the instructions for each add-on below. Thanks so much for your patience and understanding for us Kickstarter newbies.
Have a fantastic and hopefully—outdoorsy weekend!
Team GRAYL
PS - add-ons can be combined, ordered in multiple quantities, and prices include shipping and handling.



Jennifer Purger on
I cannot add on an extra cartridge, I keep trying like you said to another person but I cannot do it, and I need to change my bank card number to a new card no. This site is not that easy to navigate sadly.
Ann on
A couple of months ago, I pledged $77. Selected the GO ANYWHERE PACKAGE, believing i was to receive a Grayl ultralight with 2 filter cartridges and a tee. Now it appears that my pledge was insufficient for that? I'm certain that we'll need a replacement filter over the months that we'll be away, and sincerely hope that I'm mistaken now.
If not, I need to get a second filter. We'll be in Asia for several months and will need to have a certainty of drinkable water . Plus, I don't want to be carrying the weight and bulk of an expensive "used up" item.
Steven T Urban on
Are ADD-ONs still available? I see no way to "manage" revise or change the amount.
Melissa Bowen on
I believe u charged my card 2 times for 53 dollar donation so that I could recieve ur product. I am on disability and I ordered this in Feb. and it was taken out in March 2016 as well.
Melissa Bowen 5733181141
GRAYL 2-time creator on
Hi Hien. Yes that is correct.
hien on
My previous Pledge amount was 53$, now I would like to add one cartridge, so all I need to do is to revise 53$ into 75.25$?