{"items": [{"author": "Kate", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150221682841213", "anchor": "fb-10150221682841213", "service": "fb", "text": "Well I love the idea, and any active woman can tell you that there is a severe lack of sophisticated sports bras. Keep brainstorming and let me know when you have prototypes :)", "timestamp": "1309879986"}, {"author": "Steven", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150221683866213", "anchor": "fb-10150221683866213", "service": "fb", "text": "Yes, I believe bio metal helix materials are used for fracture and osteotomy internal fixation in orthopedic and podiatric surgery. It's the rage, in fact.", "timestamp": "1309880079"}, {"author": "[deleted]", "source_link": "http://www.reddit.com/r/TwoXChromosomes/comments/ih8ds#c23qzki", "anchor": "r-c23qzki", "service": "r", "text": "From a material science point of view it would be pretty difficult to make a bra that could uniformly contract to transition into sports-bra functionality. This could be done w/ thermoelastic materials, but then temperature rather than user control would determine the bra mode. Probably the best compromise would be an elastic band / bands / or mesh interwoven with the bra that could be tightened via pull strings at the sternum or rear clasp to increase tension / support. It'd be quite a sewing feat (expensive to manufacture), but probably doable.\n", "timestamp": 1309886683}, {"author": "cbr", "source_link": "http://www.reddit.com/r/TwoXChromosomes/comments/ih8ds#c23r4qm", "anchor": "r-c23r4qm", "service": "r", "text": "→ You can control temperature with electricity, though. The bio metal helix fibers shrink when you run current through them because they heat up.\n", "timestamp": 1309887869}, {"author": "[deleted]", "source_link": "http://www.reddit.com/r/TwoXChromosomes/comments/ih8ds#c23ra6k", "anchor": "r-c23ra6k", "service": "r", "text": "→ → Hmm, good point.\nThere also seems to be this stuff. Clever application of smart materials could definitely do it, but would women really want a bra w/ a small battery pack?\n\n
Also if you were using thermoelastic material, then in one mode the bra would double as a boob-warmer. Probably a selling point for fall/winter but ouch during summer. And, unless the material was insulated, the activation temperature would have to be high enough such that ambient and body temperature wouldn't alter the mode (aka a bit hot). This is, unless you wanted to get very clever and make it so elevated body temperature during exercise caused the transition to sports-bra mode.\n", "timestamp": 1309889053}, {"author": "Sharkbutter", "source_link": "http://www.reddit.com/r/TwoXChromosomes/comments/ih8ds#c23rblu", "anchor": "r-c23rblu", "service": "r", "text": "I find that articles of clothing designed to do more than one thing, rarely do either well. That said, it could be doable from a construction standpoint but it would severely limit the style of regular bra that could be worn. For example, a balconette style bra, when made tighter, would do nothing but squish the ladies up and out. So it would have to be full coverage, which not everyone likes wearing in the first place. Jut my two pennies.\n", "timestamp": 1309889363}, {"author": "anthurium", "source_link": "http://www.reddit.com/r/TwoXChromosomes/comments/ih8ds#c23rsfv", "anchor": "r-c23rsfv", "service": "r", "text": "I don't really see how this would work. All of my regular bras have underwires whereas my sports bras do not. They're made of very different materials as well. However, if it could work, I would love it. The feeling of dread and regret that I feel when I open my gym bag and realize I forgot my sports bra is the worst. 45 minutes of my lace-clad 36DD's on the treadmill is not pretty.\n", "timestamp": 1309893197}, {"author": "Neil", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150221999406213", "anchor": "fb-10150221999406213", "service": "fb", "text": "Brilliant idea Jeff, I'm not sure about the bio metal helix, it might be too warm against the body for it to work effectively, but there are various classes of shape memory polymers (some of which work via small electrical currents) and they tend to be cheaper than metal based ones.", "timestamp": "1309906162"}, {"author": "Alice", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150222030706213", "anchor": "fb-10150222030706213", "service": "fb", "text": "thats silly, sports bras are way more comfortable all the time, they just don't look as good", "timestamp": "1309908858"}, {"author": "Bill", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150222051981213", "anchor": "fb-10150222051981213", "service": "fb", "text": "Jeff, you gotta run these things past your sister first.", "timestamp": "1309911535"}, {"author": "Jeff Kaufman", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150222124791213", "anchor": "fb-10150222124791213", "service": "fb", "text": "@Alice: this works whether the objection to constant sportsbraing is comfort or looks.", "timestamp": "1309921947"}, {"author": "Alice", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150222331251213", "anchor": "fb-10150222331251213", "service": "fb", "text": "sorry, I didn't get past the first sentence, since I disagreed with it", "timestamp": "1309954022"}, {"author": "Jeff Kaufman", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150222336401213", "anchor": "fb-10150222336401213", "service": "fb", "text": "@Alice: I think you were objecting to the third sentence, actually.", "timestamp": "1309954703"}, {"author": "Josh", "source_link": "https://www.facebook.com/notes/jeff-kaufman/a-normal-bra-that-becomes-a-sports-bra-when-needed/10150221681046213/?comment_id=10150222815876213", "anchor": "fb-10150222815876213", "service": "fb", "text": "I feel like women may or may not want a bra that's configured to run electricity across their breasts...", "timestamp": "1310006044"}]}