Quick answer
Remove the bumper, hand-wash it with mild soap and warm water, dry thoroughly, then reattach. Avoid dishwashers and harsh chemicals to keep the silicone flexible and scratch-free.
Why removing the bumper first matters
The S'well 40oz Tumbler XL Bumper is designed to protect your tumbler from dings and scratches, but dirt and grime can build up underneath it over time. If you wash the tumbler with the bumper still on, moisture and debris can get trapped, leading to discoloration or odors. Removing the bumper before cleaning ensures both the tumbler and the bumper stay in top condition.
What to avoid when cleaning silicone
Silicone bumpers are durable but can degrade if exposed to high heat, abrasive scrubbers, or bleach-based cleaners. Never put the bumper in a dishwasher or microwave. Stick to soft cloths or sponges and mild dish soap. Harsh chemicals may cause the silicone to become sticky or lose its vibrant color.
How to clean your S'well 40oz Tumbler XL Bumper
- Remove the bumper: Gently peel the silicone bumper off the tumbler starting from one edge. It is flexible and should slide off without force. Do not pull sharply or use tools that could tear the silicone. If the bumper feels stuck, run warm water over it to loosen any debris before pulling.
- Hand-wash with mild soap: Fill a sink or bowl with warm water and a few drops of mild dish soap. Submerge the bumper and use a soft cloth or sponge to wipe away dirt, especially in the grooves. Rinse thoroughly with clean water. Avoid scrubbing with a brush or abrasive pad — they can leave micro-scratches on the silicone surface.
- Dry completely before reattaching: Pat the bumper dry with a lint-free towel, then let it air-dry for at least 30 minutes. Make sure both the bumper and the tumbler are completely dry before putting the bumper back on. Any trapped moisture can lead to mildew or slipping. Check the inside of the bumper for water droplets; use a dry towel to absorb any remaining moisture.
- Reattach the bumper: Align the bumper with the base of the tumbler and stretch it gently over the bottom edge. Work it upward evenly so it sits flush. It should fit snugly without gaps. If the bumper slides or rotates after reattachment, remove it and repeat the drying step — moisture can reduce grip.
Product facts
-
40oz Tumbler XL Bumper: The 40oz Tumbler XL Bumper adds a pop of color while helping keep your Tumbler XL free from scratches, dings, and dents. Regular cleaning preserves both the protective function and the color accent, so your tumbler looks good and stays protected.
40oz Tumbler XL Bumper
