After doing some research, although in retrospect, I may have wanted to do the research earlier. GSI has always had some of the more reliable gear and this product is no different. The cup itself is made out of polypropelene which doesn't leach in either direction and is bpa free and safe! After having used it several time, going back and forth from boiling hot coffee to iced cold water, I can tell you that the coffee taste does not leach into the cup!

Is there a replacement oring or seal for this?

Just buy a new one if you’ve wore it out.

How can I wash the outside sleeve?

You could hand wash with mild soap or put through washer with cold water but I would not recommend putting it in the dryer. Towel or air dry for best results and minimum wear/tear.

If by stackable you’re asking if they’ll nest together, then no, they won’t.

Gsi Outdoors Infinity Backpacker Mug I Lightweight Bpa Free Coffee

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🔥 Sip smart, trek light — the ultimate mug for the modern trailblazer!

PRECISION POUR - Internal measurement markers make cooking dehydrated meals a breeze—fuel your journey with exactness.
LIGHT AS A FEATHER - Weighs just 3.84 ounces—carry more, stress less on your next adventure.
ERGONOMIC COZY GRIP - Flexible insulated sleeve with loop handle lets you cradle your mug comfortably, even in freezing temps.
SIP SEAL CONFIDENCE - Leak-proof sealable sip-top keeps your coffee hot and your pack dry—no spills, no worries.
ADVENTURE READY DURABILITY - Break-resistant, freezer safe, and non-slip design built to endure every rugged trail.

The GSI Outdoors Infinity Backpacker Mug is a 17.5 fl oz insulated polypropylene mug designed for outdoor enthusiasts. Weighing only 3.84 ounces, it features a leak-proof sip-top, internal measurement markers, and a flexible insulated sleeve with a loop handle for comfortable grip. Durable, break-resistant, and freezer safe, this mug keeps beverages warm while being lightweight and easy to carry on any hiking or camping trip.

Specifications

ASIN	B00S4LJL02
Age Range Description	Adult
Best Sellers Rank	#10,886 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Camping Cups & Mugs
Brand	GSI Outdoors
Brand Name	GSI Outdoors
Capacity	17.5 Fluid Ounces
Color	Blue
Customer Reviews	4.8 out of 5 stars 4,818 Reviews
Finish Types	Matte and Textured
Global Trade Identification Number	00090497752520
Included Components	17 fl. oz. Mug, Sealable Sip-It Top, Insulated Sleeve w/ Handle
Item Dimensions W x H	3.6"W x 4.6"H
Item Type Name	GSI Outdoors Infinity Backpacker Mug, Blue
Item Weight	0.24 Pounds
Manufacturer	GSI Outdoors, Inc.
Manufacturer Part Number	75252
Manufacturer Warranty Description	All GSI Outdoors products are fully warrantied to the original owner against manufacturer's defects in materials and workmanship.
Material	Polypropylene (PP)
Material Features	Insulated
Material Type	Polypropylene (PP)
Material Type Free	BPA Free
Model Number	75252
Number of Items	3
Occasion	Hiking
Other Special Features of the Product	Break Resistant, Foldable, Freezer Safe, Light Up, Lightweight, Non-Slip
Pattern	Solid
Product Care Instructions	Hand Wash Only
Product Style	Modern
Recommended Uses For Product	Outdoor Activities
Reusability	Reusable
Shape	Round
Size	1 Count (Pack of 1)
Special Feature	Break Resistant, Foldable, Freezer Safe, Light Up , Lightweight, Non-Slip
Specific Uses For Product	Outdoor Activities
Style	Modern
Theme	Ecological,Travel
UPC	090497752520
Unit Count	1.0 Count

Reviews

C**Y

10.12.2025

A**.

17.06.2025

K**N

6.03.2026

E**T

3.05.2017

J**H

11.09.2019

D**Y

25.09.2025

A**R

17.04.2026

S**.

28.03.2026

R**4

12.09.2019

N**E

24.06.2019

R**Y

3.08.2024

E**O

2.06.2025

S**S

4.07.2025

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GSI Outdoors Infinity Backpacker Mug I Lightweight, BPA-Free Coffee Cup for Travel, Camping Gear, Backpacking and Outdoors - 17 oz.

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Details

Description

Specifications

Reviews

Common Questions