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The Opret silicone travel bottles are a set of four 100ml squeezable bottles for shampoo, conditioner and lotion. They only dispense when you press the body, so nothing pumps itself out inside a bag. At 100ml each they also sit inside the carry-on liquid limit.

Four 100ml bottles, one squeeze valve

Each bottle holds 100ml, which is 3.4 ounces, the carry-on liquid limit. The bodies are BPA-free food-grade silicone, soft enough to squeeze flat. An anti-leak valve in the neck means they release only under pressure. The mouth is wide, so filling and rinsing is straightforward even with thick conditioner. The bases are flat, so they stand up on a shelf. The set comes in four colours with stick-on labels.

One quart bag, four bottles

The liquids bag is the part of security that slows people down. Four bottles at 100ml go in flat and still leave room for a toothpaste. They squeeze rather than pour, so you get the last of the conditioner out instead of leaving it in the neck. Refill them and you also stop buying travel sizes on every trip. They drop straight into a toiletry bag.

What keeps coming up

Most owners say the same two things. They do not leak, and they are easy to fill through the wide mouth, even with thick conditioner. Squeezing gets called out as the reason people switched from hard bottles, because you get the last of the product out instead of leaving it in the neck. The flat bases and the carry-on size are the other repeated notes.

The part to keep an eye on is the ring that joins the silicone body to the cap. It is the one component owners mention wearing out, usually after a good stretch of use. If a cap ever stops gripping properly, swap that bottle out and carry on with the rest.