humangear GoToob+ Review: The 2.5 oz Silicone Bottle With a Cap That Locks Shut

Every size, and where the 3.4 oz line falls

humangear publishes a complete measurement set. Small is 50 by 80 by 48 mm (2 by 3.15 by 1.9 inches) at 45 grams, Medium is 50.8 by 101.6 by 48 mm (2 by 4 by 1.9 inches) at 50 grams, Large is 57.15 by 114.3 by 48 mm (2.25 by 4.5 by 1.9 inches) at 65 grams, and the 6 oz XL is 63.5 by 133.35 by 44.45 mm (2.5 by 5.25 by 1.75 inches) at 85 grams. Twenty grams separate the smallest carry-on size from the largest, so the difference is volume, not weight.

The maker prints 'TSA-approved for carry-on travel' on the GoToob+ listing and 'not an approved size for TSA carry-on' on the XL. TSA does not certify bottles. Its published rule allows a quart-sized bag of liquids, aerosols, gels, creams and pastes in carry-on, with each container at 3.4 ounces (100 milliliters) or less, and sends anything larger to checked baggage. Small, Medium and Large sit at or under that line, the Large exactly on it; the 6 oz XL does not.

How the LoopLock and the valve behave

The LoopLock is a tab on the collar that pops out. In one position it hangs the tube from a hook; in the other it drops over the flip cap and holds it down, the feature behind humangear's 'only travel bottle with a locking cap' line. The cap still has to be pushed shut before the tab will close on it, and a cap left ajar cannot be locked. humangear's own packing advice is to put the tubes in a sealed ziplock bag anyway.

The cap holds a silicone valve, built to pass thick lotion and thin soap alike. humangear's instruction for a small dose of a thin fluid is to squeeze quickly: the longer the squeeze, the longer the valve stays open, so a slow squeeze dispenses more. Cleaning splits by part. The tube and collar go on the upper rack of a dishwasher; the flip cap is hand-wash only in warm, soapy water. Replacement flip caps are available on their own, and GoToob+ caps do not fit the original GoToob.

Fluids silicone accepts, and the ones it does not

The tube and valve are silicone, the cap and ID ring are #5 polypropylene, and humangear describes the line as BPA-free, phthalate-free and FDA food-safe. Silicone is inert against most of a toiletry kit; the exceptions matter more. humangear recommends against salicylic acid (common in acne treatments), hair serums and shine shampoos including argan-oil products, silicone-based lubricants, DEET-based repellents, hydrogen peroxide and sterile products such as contact lens solution. Alcohols sit in a middle group: usable, but slowly evaporating through the wall.

Sunscreen, tanning lotion, essential oils, castile soap and almond butter land in a test-first group, where humangear says problems have been reported in some cases and suggests an overnight trial before travel. Alcohol is the sharpest limit. humangear puts 70% hand sanitizer at roughly two to three weeks before the alcohol concentration drops below 60%, and frames these as travel bottles rather than long-term storage; a fluid left for months can dry out or thicken, and adding a little water revives some products.

The only humangear entry in the CPSC recall database is not a GoToob. On 30 March 2017 the agency announced a recall of the capCAP accessory bottle cap, model numbers HG0501, HG0502, HG0505, HG0505-DSG and HG0515, after one report of liquid leakage; a leaking capCAP on a hot drink posed a burn hazard. About 61,000 units were affected. That covers a different product line, so it is not evidence about GoToob+ performance, but it is the whole of the brand's recall record.

Cost from a single bottle to a multi-pack

Singles list at $9.99 for Small, $11.99 for Medium and $13.99 for Large; the 6 oz XL is $17.99. humangear also sells three-packs at $23.99 for three Small bottles, $28.99 for three Medium and $33.99 for three Large, which works out to $8.00, $9.66 and $11.33 a bottle. The pack saves roughly $2 to $3 a bottle over singles, in fixed color combinations. Nothing else in the kit needs a subscription: the only recurring cost is a replacement cap.

Replacement flip caps cost $5.00 in a pack of three, or $6.00 in a pack of six, in a GoToob+ style of their own; tubes and collars are not included. The warranty is a lifetime one for the original owner, covering defects in materials and workmanship. It excludes accident, improper care, improper use, negligence and everyday wear and tear, and repair or replacement is humangear's choice, with a similar product substituted if the model is gone. Webstore refunds last 30 days on unused goods in their original packaging; you pay return shipping.

When to skip it

Skip the GoToob+ if the fluid is on the avoid list. Salicylic acid, argan-oil serums, DEET and hydrogen peroxide are humangear's no-gos, and a drugstore bottle holds those just as well. Skip it if the contents will sit for months, since the page frames these as travel bottles; a rigid screw-cap bottle stores better. And if the trip needs more than 3.4 oz of anything, that bottle belongs in checked baggage rather than at the checkpoint.

The 6 oz XL at $17.99 is the answer for checked luggage and car trips, but humangear says outright that the XL is not an approved carry-on size, so it will not clear the checkpoint bag. A traveler who needs only a weekend's worth can drop to the 1.7 oz Small at $9.99 and refill from a larger bottle at home. What you pay for is the locking collar and the give of silicone; a plain squeeze bottle still leaves the cap to friction, and the quart bag has to contain it regardless.