www.incontinentsupport.org

I recently purchased a case of these. The actual working capacity is indeed less than the stated max of 4.5L. For me, these hold more than an Abena M4 and are probably more in the class of a Dry 24/7. I have fit (therefore leak) issues with the Dry 24/7, so the Inspire are a suitable diaper for overnight for me. Anybody looking to order, their website handles multiple currencies. Be sure to switch it to USD if you're paying with a US-based bank account or credit card. The prices in USD are a bit better than Canadian prices and this way you don't have to deal with currency conversion charges.