Mini pump (double-action)

Much more effective than I thought it would be - a viable solution for the Cave or smaller I would say. Takes about 3 mins to fully inflate the Cave.

I was concerned about the plastic construction, but I decided to try before going for a Heimplanet tent. This particular model is made in Taiwan, which is great news because that means that Heimplanet did not go for the cheapest supplier (in contrast to manufacturing in mainland China). The pump is solid and works as advertised, weighing only 0.31 lbs (135 g).The best part is that using a 5/8" washer hose (the orange thing on the photo), I was able to adapt this pump to a

The pump looks larger in the pictures than it is, but it's a great size and easy to build adapters yourself.I built an adapter to inflate my queen size air mattress (REI Co-op Kingdom Insulated Sleep System 40).Inflating such a large size volume took roughly 15 minutes.The size and weight is perfect if you need to take it on flights or even hiking trips.Materials I used for the adapter:1x 1/2 in. I.D. x 3/8 in. MIP Plastic Hose Barb Adapter Fitting1x 5/8 in. O.D. x 1/2 in. I.D. x 10 ft. Clear PVC Vinyl Tubingslides right into the hose adapter that screws onto the mattress

Great size I already have the large pump which is a bit too big. This pump attaches direct to my Cave no fiddly adaptors and will pump a Cave in 3 minutes.

There are manufacturers , that are "out there" that provide interesting products. Heimplanet are manufacturers of the iconic Cave , Fistral , and other tents . Quality and futuristic ( seen in Lost In Space) .Not cheap budget , more 4 * accommodation.Happy to own a Cave , and now have back up - air pump . Sorted . Thank you HP for a great product .