Are these made similar to the Dexcom provided G6 patches?

I cannot speak for D6 patches but I would assume they are the same material as D7. These are pretty much the same size and shape as the patches provided with the D7. They are clear plastic and fit around the sensor well. The tape is like a sturdy clear tape and did not stay completely stuck to my skin. There entire backside was loose after a day and a half. They are waterproof, which was good. Hope this helps.

Are you supposed to use the aftermarket overlay alone, or both?

I just use the aftermarket overlay. I fell that it sticks better that the overlay that comes with the G7 sensor.

Does the no hole version cover the entire sensor or just go around the sensor?

The patch is much the same as the Dexcom patch only they are easier to apply. There is a hole in the patch like like the Dexcom patch. After using these patches for the last few months, I would no longer say they adhere better than the Dexcom patch ( think I have had to replace the patch on every sensor), but they are easier to apply.

ASIN	B0BWMMXSPF
Best Sellers Rank	#68,681 in Health & Household ( See Top 100 in Health & Household ) #518 in Adhesive Bandages
Date First Available	February 24, 2023
Manufacturer	OBUZOO
Package Dimensions	6.42 x 5.04 x 0.39 inches; 1.13 ounces

G7 Adhesive Patches,40Pack Waterproof & Breathable Patches for Dexcom G7 & Stelo,Premium Transparent Overpatch for G7 Sensor,Skin-Friendly Patches for 10 Days

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