Mercury Bulletz Premium Memory Foam Ear Tips | Replacement Earbud Tips in Small, Medium, Large Sizes | Single Pair, 3-Pack & Variety Pack Options for in-Ear Headphones (Three Pack, Large)

Bought the small size of these to replace an older set of Bulletz that I had on a pair of Moondrop Starfields (I have tiny ears). The quality on this set is a step up from previous and they fit my ears perfectly! They are much easier to put over the eartips than the last set I had and the seal is great. They muffle outside noise but don't cancel it out entirely. Dekoni makes good stuff - I've bought their Nuggets for my Klipsch HP3s as well as some of their headphone pads and everything has held up for years under regular use with no issues. My last set of Bulletz lasted 5 years and I expect these will as well.

Have been searching for an earbud that touches all the bases and fits securely in my ears. The default tips for thee xm4 are terribad in that they are a pain to get a snug fit and then super uncomfortable once you finally get one. These solve that problem and they are way more comfortable. I did experience some discomfort after awhile but I think that is due to trying literally every wireless IEM worth trying save the technics az60. I had thought the Sennheiser MTW3 that just came out would be the one but it just had a few quirks I didn't like and the ambient mode isn't as good as the XM4 e.g. noticeably more white noise.Once my ears heal from all the bad earbud fits I and tips I have tried I don't think I will even feel these. Long term durability I cannot speak for as I just got these in the past couple days. They are designed for like replacement every month and a half or so of constant use so that's to be expected I suppose. I haven't tried the XM4 comply tips but don't think I'm gonna. One thing I will mention is the default tips fit a little more snugly on the stems than these do but they fit snug enough I'm confident they will not fall out or pop off. I did quite a bit of eating and ran the fit test in the sony app, before and after eating, but they never budged.I wore them for several hours including talking, eating and generally moving around testing them every so often with the fit test to see if they budged, they didn't. No high intensity workouts yet but if they stayed snug opening my yap super wide to take bites of an oversized piece of banana bread I don't foresee a problem. Perhaps from constant impact force they might work lose, I haven't run in them yet but seems unlikely. I did some gun training with them in to see if they blocked enough noise with the default tips and even with a less than stellar fit never had them come out. These tips will keep them rock solid is my best.

i got these for the sony hm 4 xm wireless ear buds they work ok for that but they have issues with sliding off of the ear bud and staying in ear luckly they never get stuck stuck in ear

I used Comply tips for a long time before I got these. Zeos recommended them as far back as his Monoprice M300 review and while I tried these tips on the iSine LX, I prefer silicone tips on those types of headphones. However, Campfire Audio IEMs really seem to benefit from foam tips. I have a pair on my Campfire IO, which tames the treble just enough over silicone tips, and also helps fix some of their weird tonality issues. My wife also has a set of these on her Campfire Polaris (Gens 1 + 2), which actually stopped the driver flex (crackling) when inserting them, for her and I anyways.These are decently comfortable, slow-rebound, memory foam tips. However, they can also be inserted (like Zeos says,) by just twisting until they seat comfortably. Personally, I've tried both that, and the "squish and roll" method, and I prefer the latter for my ears. As a bonus, these tips are able to be washed with water without being destroyed. Dekoni recommends giving them a rinse if they get gross, or as part of your regular IEM cleaning/maintenance routine, and I concur.For the price, I like them a lot, and since they're aftermarket, you can keep all your OE tips clean, in case you plan to sell your IEMs later or whatever. I'd recommend them if you're someone who likes foam tips, or someone who has some brighter IEMs that need the treble tamed a bit. The Mercury set is for wider-bore IEMs, like the Campfire Audio line, the Massdrop Plus UIEM, Sennheiser IE80, Mee Audio Pinnacle P1/Massdrop PX, and many others.*Disclaimer* - Sound and Comfort are highly subjective and none of my opinions/impressions should be taken as statements of objective fact. I purchased these with the hope that would make me love my IO's a bit more. No one has asked or otherwise attempted to influence the content of this review.

The base of the eartips are really sharp feeling and irritate the inner ear canal when I wear them, a shame because they do sound great and the rest of the fit is good. if they were rounded at least somewhat on both ends this would not be an issue.

Alrighty well I've owned the Moondrop Starfields for a while now, and have been thoroughly impressed with them... I've had the Dekoni Bulletz in my shopping cart's "save later" for a while and decided after what felt like two pieces of rubber digging into my ears moving back and forth back and forth when I go on runs that maybe I need something softer and also that stays in place. So I pulled the trigger on the Dekoni Bulletz, and they came in the mail last night. When I put them in me ear holes and ooo boy dey so soft soft, aHem... hmmm... Then I began to throw my head in random directions too to see if they stay in, and obviously they do... Anyways, finally tried them out today w/ some music and I feel stupid for not getting them earlier, this is exactly the sound quality upgrade I've been looking for, sub bass is far more present than before, bass is kickin, highs are sparkling, and I've never been a good judge at mids which is often the only part of EQ parameters I just ignore... But anyways, can't recommend these enough, supreme comfort and fantastic improvement to sound quality. On the downside they're are a little pricey at $19 for 3 sets but hey not like Focal replacement pads pricey, and I'll probably have to use a qtip before each use...