The model I have are "YMPD-10T". Spindles are titanium and weight is 284g. They have a nice large platform with 10 replaceable aluminium spikes on each side. The platform is larger than the J&L CNC-superlight pedals. The pedals are also quite thin.
Normally, Ti spindle pedals will have some sort of rider weight limit. These pedals did not come with any documentation mentioning a weight limit, but I'm using them on a kids bike anyway. As an adult, I'd want to check out the interwebs and see if there is a weight limit.