Quite good "” nearly perfect. However, two changes might be useful in a future version:

1. A stiff, rectangular "collar" around the interior opening (where the G5 transmitter pokes through). This would aid placement.

2. Small "handles" on each half of the adhesive backing, that stick out a little past the outline of the patch. The idea here would be to be able to fit the patch around the sensor, with the backing still on the adhesive, and then slowly pull the backing out from under the patch. This would help eliminate stretching & wrinkling/creasing around the edge of the patch.

Otherwise, great product.

This company is amazing! Buy this product! It comes in a very nice thick plastic bag, with a zip top. It has simple directions and the product is amazing. My son doesn't even feel it on his arm hardly at all. Sometimes the patch comes up a little bit on the edge, but we use some skin tac product to put that edge back in place, and it can stay on his arm for weeks that way! I would give this product 10 stars. We would love to see this product in CLEAR. If it was in clear it would be a huge seller because it would be hard to see it and make the device on the arm seem much smaller.

I love this adhesive patch! It sticks well and lasts a week. Like a lot of things in life, there is room for improvement. My recommendation would be to increase the opening about 1mm on all four sides. It would keep the patch from getting stuck on the Dexcom sensor and would make it a tad bit easier to apply without it getting stuck to itself when you need to unstick it from the side of the sensor. Never the less, I will be ordering more when I get close to running out.

UPDATE 12/29/2017: I still love this patch! Sorry for the picture of my big old belly! I put a new DexG5 sensor and Simpatch on. But I wanted to include a little bit of the other location I apply these (I alternate each week). The opening is a wee tad bit too small to fit over the G5 sensor. But with a bit of trial and error I think I found the best way and the correct amount to make the opening just wide enough to get it to fit.

The Simpatch does indeed last one week. But it does peel away on the edges a bit. It may be that adhesives don't do so well with my skin. Whereas adhesives work better with others. So, with the current one that I have on I put some Skin-Tac on first and let it dry until it was tacky. However.... I did NOT put it on under the Dexcom sensor's adhesive. I put it around the sensor, being careful not to touch the sensor's adhesive. Then I applied the Simpatch. I will try to remember to report back next week.

Considering the patch is simply pre-cut Kinesiology tape at 4 times the price, I will not buy this product again. It took less than 4 days for the patch to pinch the adhesive on a Dexcom sensor and there is no way to replace the Simpatch without ripping out the sensor. These sensors are $75 each and designed to last at least a week. I have been using generic Kinesiology tape for years and if one piece comes loose or starts to peel, it can be replaced to re-secure the site.

Perhaps it works for people who never sweat, but my first try was not successful and I won't be using the remaining as it is not work the risk losing a Dexom sensor and transmitter. Regarding price, your product sells for $17.75 for 20 patches or 90 cents a piece. A 16'4' roll of Mueller Kinesiology tape sells for $12.99 ($8 with Prime) and can be cut into 65 pieces of similar size coming in at less than 20 (12) cents a piece.

After over a year of trying multiple overlayment adheasives for my daughters Dexcom G5 and OmniPod I happened upon Simpatch and ordered with great expectations. I can promise you that not only did Simpatch meet my expectations to last a week for the Dex and the 3 days for the pod, but has more than exceeded my hopes and dreams! I have yet (2 months later) had one fail or peel off before we had to remove it due to pod or sensor failure, no dermal reaction, and it doesn't hurt to peel it off! She currently has one on her Dex going into a third week!! I fully expect the sensor to die this week but the Simpatch is holding strong! A+++ for Simpatch!