How to Swap Straw and Sport Tops on Pura Big Mouth Bottles

Quick Answer

To swap tops on Pura Big Mouth bottles, remove the current top by unscrewing it, then align the new top's threads with the bottle neck and twist on firmly until hand-tight. Always verify the top is fully seated and test for leaks before filling.

Pura Big Mouth bottles are built to grow with your child, and one of their best features is the ability to change the top to match different ages and activities. Swapping between the sport top and the straw top takes less than a minute, but doing it right matters for a leak-free, safe drinking experience.

This guide walks you through the process step by step, covering both types of tops, common mistakes, and how to get the most from your Pura bottle parts.

Understanding Your Pura Big Mouth Top Options

The Big Mouth Sport bottles come with a medical-grade silicone sport top that's 100% plastic-free. When you want a straw option, you can purchase the Big Mouth Silicone Sport Straw separately. Both tops screw onto the same bottle, so you can switch depending on your child's age or your activity.

The sport top offers a spill-resistant squeeze-and-sip design suitable for active kids and adults. The straw top, with its silicone straw and spout, requires a bit more sucking but is easier for younger kids who are used to straw cups. Knowing the difference helps you pick the right top for the moment.

• Check that the bottle's neck is clean and dry before attaching either top.
• Keep the sealing disk (if included) in place when using the sport top; some straw tops have their own integrated sealing mechanism.

Step-by-Step: Replacing the Sport Top with a Straw Top

First, remove the sport top by twisting it counterclockwise. If it's stuck, run warm water over the cap area for a few seconds to loosen it. Then, wash and dry the bottle's rim to ensure no residue interferes with the seal.

Take the Big Mouth Silicone Sport Straw and align its threads with the bottle's neck. Turn it clockwise until it's snug, but don't overtighten. Give the bottle a quick shake test over a sink to confirm the seal is intact.

• If you're switching from straw to sport, follow the same removal and attachment steps in reverse.
• Always store the unused top clean and dry to prevent odors.

Common Mistakes and Troubleshooting

One frequent error is cross-threading, which happens when you force the top onto the bottle at an angle. This can damage the threads and cause leaks. Always start the top straight and turn slowly; if you feel resistance, back off and realign.

Another mistake is overtightening, which can squeeze the silicone and deform the seal. Hand-tight is enough. If you notice leaks, reassemble with fresh parts or check that the silicone gasket (if any) is properly seated.

• If the straw top leaks from the straw itself, the straw might not be fully inserted into the collar. Push it in until it clicks.
• Replace any cracked or worn silicone parts immediately—they're cheaper than a ruined backpack.

How to Swap Tops on Pura Big Mouth Bottles

1. Remove the current top: Twist counterclockwise to unscrew either the sport top or straw top. If it's tight, run warm water over the cap for a few seconds before twisting again. Checkpoint: the bottle's threads should be clean and free of debris.
2. Wash and dry the bottle rim: Use warm soapy water and rinse thoroughly. Dry the rim and the inside of the new top to prevent mold and ensure a good seal. A clean rim prevents leaks and keeps parts hygienic.
3. Align the new top with the threads: Hold the new top straight over the bottle neck and start turning clockwise slowly. Make sure the top is level to avoid cross-threading. If you feel resistance, stop and realign before continuing.
4. Tighten until hand-tight: Twist until snug. Do not overtighten, as this can damage the silicone and cause leaks. Test the seal by shaking the bottle over a sink before filling it fully.

Parts You Might Need

• Big Mouth® Sport 16oz Insulated Bottle: 100% plastic-free bottle, sleeve, collar, and sport top. MadeSafe Certified. 18/8 stainless steel, dishwasher safe. If you're starting with an insulated 16oz bottle, you can easily add the silicone straw top as a separate purchase to give your child more drinking options.
• Big Mouth® Silicone Sport Straw: 100% plastic-free sport and activity top crafted from medical grade silicone. BPA-free, BPS-free, and will not leach toxins. This is the exact top you need to convert your sport bottle into a straw bottle. Its design is suited for ages 18 months to adult.

Swapping between the sport and straw tops on your Pura Big Mouth bottle is simple. With the right parts, a little care, and this guide, you can give your child a comfortable, leak-free drinking experience that grows with them. Remember to replace worn silicone parts promptly to keep the bottle safe and functional for years.