These warmers require a garter belt!
Okay, positives first: these are warm, good zippers and have articulable knees.
Negatives: I could not get them to stay up - annoying on a 32* day!! They guys told me I should wear a garter belt with them. Ha, ha, ha.
The silicone grippers are on the outside of the upper thigh on these warmers, but, since my bibs don't have silicon grippers on the inside of the leg holes, so there was no silicone-silicone contact to keep the darn things up! Annoying, to say the least.