hug:Singledad
We used the one we had to make more.We do prefer the pump vests most of the time.
It is not as hard as it looks.I will see if I can get the pictures I took of making ours off my old computer.
The pumps we used are the same type used to make small water fountains.We learned the solar ones did not work as well for us because we like shade.
The hard part for DH and I was finding a battery powered water pump light enough for our youngest that moved enough water.We ended up going with a stronger water pump that is to heavy for her to manage herself but we could attack to her carrier/wheelchair.
Since you know your child think about if you will carry the pump or your child will before getting the pump.Read to see how much water it pumps per time amount.The really small pumps do not handle enough water to keep the water moving fast enough to really stay cool through the whole vest.So avoid the tiny ones like the size you would see in miniture fountains that work as USB desk toys.
For my younger kids I used the ones for tabletop fountains. They fit into PVC connectors found in the plumbing section of my local Home depot.You can get the connectors threaded or unthreaded, I did not want to have to cut threads and you need them on one side as you need to open and replace the ice water.(if you have friends who do plumbing or landscaping they may have a thread cutter you can barrow or barrow their skills doing it for you)
For the thermos part the kids got the big drink mugs that hold 64 ounces(small round water cooler maybe) and it took my some time to match the threading.
Now back to that pump, I glued ours into the PVC connectors making sure intake tube goes into the mug.Since the top of our pumps were the post top type I got another connector this one from the garden department.Sized this post and got a connector for irragation systems that matched post size on one end and 1/4 inch tubing on other end.Glued this connector also.Also bought tubing caps/plugs to close off tubing when not in use.
Bought 1/4 inch airline tubing for fish tanks and a pack of connectors at petstore and at
Walmart( was not sure which connectors I liked better, this is one of the areas where the store bought vest has nicer than I have found. Ended up liking the petstore ones better than the Walmart ones)
Learned it is better to glue a short tubes(6 inch piece of tubing to the pump connector and 14 inch return tube) so kids do not have to connect directly to the pump.I also cover the pump with cover made of a firm dog toy cut in half. Drilled 8 holes in this toy to run tubing through and to keep the pump cool.My kids fiddle with things so this was my safety add-on.Toy goes on firmly enough that kids do not take it off but I can to change batteries.
Now the bag for the pump can be a bag or just a straping system.This is where you decide which works better for you child.If your child uses a stroller or wheelchair we used a O2 mount to put the mug in.
The vest is like quilting but easier to think of as a track that your tubing rides in.How much tubing you use depends on you and the size of your child. I cut our vests out of cotton fabric. Two layers per vest.I am sure other sewers would have other ways of sewing the tubing in.Plan you endsa top of vest to save you work on filling the vest with water) I drew a chalk line to sew in the pattern I wanted the tubing to go then used a double needle that was spaced wide enough that tubing fit between the needles I carefully followed my line keeping my tubing between.I know this could also done without the tubing then thread the tubing through after you are done sewing. After tubing was sewn in I finished the veat edges with bias tape.Added velcro closure.Cap the ends of the tubing with at least a 6 inch tails of tubing sticking out of the vest.
Now lines of tubing with those connectors at each end glued on each end(keep extras with you in case they come off)I have different sizes so I can carry the pump for the kids some of the time.If you need these to be very clean most Drs will help you get O2 tubing line that comes in sealed clean packs.
Fill the mug with ice water.Filling the vest itself can be done with suction on tubing tail by mouth, wet vac or other.Fill connector lines by mouth(think if them as straws and drink some of the ice water)
Connect and turn on pump. Add fresh ice as needed.