The bladder membrane is made from natural rubber. The membrane is approximately 3/16" thick. The 40L bladder measures 17.5" long. The outside diameter is 6.5". The top and bottom holes are 2.75" and 2.25" in diameter. The 80L bladder measures 21.75" long. The outside diameter is 7.75". The top and bottom holes are 3.75" and 3.9" in diameter.
Did we forget something? If you need more information about this product, please tell us what else you'd like to know with a quick email or live chat!
Specs
Select product option(s) from the drop-down menu at top of page to see item-specific specifications here.
Product Color
Black
Material
Natural rubber
UPC
Does not apply
Origin
Imported
Shipping
Select product option(s) from the drop-down menu at top of page to see item-specific specifications here.
Reviews
PHG provides product-giveaway sweepstakes entries to all submitters of reviews, a program which also accepts entries without purchase. Take advantage of this program for repeated opportunities to win great PHG products! Nature of review does not influence odds of winning. Full contest rules are available here. All reviews are by verified buyers.