Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How is this lens held onto the camera?  I have GoPro Hero 3+ and it doesn't stay on.  Slightest touch and it falls off.  Worried about losing it.
Document: I ordered this filter for my new GoPro Hero 3+ Black. I attached the filter to the camera and it had a very loose fit - there is no way it would remain on the camera while scuba diving.I posted a question up to Amazon.com, and within a short time Jeff from Polar Pro contacted me and told me that &#34;a very small percentage of the GoPro Hero3+ housings are small, and we have a custom base piece for that (yours sounds like it).
Well, I've used several red filters with my Hero 3, and when I saw the magnifying ability of this set up, I thought of finally found the answer to solving the GoPro's macro weakness.Unfortunately, when I pulled it out of the bag to attach it to my camera while in Cozumel, I discovered the tab that holds the glass lens closed broken, which meant I couldn't keep it closed.Never used it once.Got back, and found it was outside the company's return period by a few days.
Fits like a glove. Then I bought the dive housing for the my hero 3+ black edition, which has the same bezel size as the standard 3 housing. I asked to exchange the product. They shipped me the standard 3 switchblade right away, and asked that I returned the rest of the products. They didnt even wait for me to return it first before sending me the replacement or the exchanged product. Truly a remarkable costumer service experience.
I still have another 3 more days of diving in Okinawa left, but now I don't have a red filter to truly capture the beauty underwater with my GoPro Hero3+.
This filter is a must have for scuba diving with the GoPro. I live in Hawaii and I always dive with my GoPro. I bought the SwitchBlade after being displeased with the color quality in dive videos. This filter dramatically improved the color quality of my videos. I give it four stars because it has made a significant improvement in the color quality of my videos and allows the camera to capture the true colors of the coral and sea life.I cannot give it a fifth because of it construction quality.
If you're looking to use a GoPro 3+ with a BacPac, this is not the right SwitchBlade to buy. You want the version for the GoPro 3 instead, since it fits the dive housing that has a BacPac back. The 3+ housing doesn't as of May 2014.I ended up getting the right SwitchBlade after receiving this one and realizing the difference. Build quality is about the same for both. Optically, they're fine. The mounts could be more sturdy.
The lenses do what they're supposed to do, ie, the red filter improves the color recorded while at depth, and the macro lens works for closeups. That's about it though.The 2 lenses are housed in a lightweight plastic mount that snaps onto the housing. It was not stable enough to keep attached while entering the water. I would have to hold it in a pocket and attach it after I was already submerged.
These lenses ONLY fit the GoPro 3+, not the GoPro 3. Not sure if there is an adapter...wish there was!
When storing my GoPro in my kit bag, cleaning and maintaining my equipment, I am very paranoid of breaking it. I have heard a couple divers complain that they had to replace their SwtichBlade after only a few dives with it. My red lens (which is also a piece of flimsy plastic) cracked after my second dive with it. Fortunately, the crack is low and has not made its way into view of the lens yet.
I used this in 50 to 100 depths in the clear waters of Cozumel and got great results. Definitely need to connect filter to lanyard/string or such due to currents to prevent loss. Lens can flip in current too but was manageable and like I said results were impressive with 3+ black. The magnifying lens is OK but I admittedly had less use for it so I may not be giving it it's due.
Answer: Hi Jim, It is a pressure fit, a very small percentage of the GoPro Hero3+ housings are small, and we have a custom base piece for that (yours sounds like it). Shoot me an email and we will 2 day you the replacement today: jeff.overall@polarprofilters.com-Polar Pro