Traveling with a yoga mat can be a hassle, especially if you're someone who sweats a lot during practice. Finding a mat that is foldable and retains its grip when wet is crucial. Here's a roundup of some of the best options based on user experiences and specifications:

1. Manduka Eko Superlite

Specs:
- Thickness: 1.5mm
- Weight: 2.2 lbs (1 kg)
- Size: 68” x 24” (172cm x 61cm)
- Price: $45

Pros:
- Super grippy even when sweaty
- Folds down small and doesn't hold creases
- Lightweight and easy to travel with

Cons:
- Not ideal for use directly on hard floors; better on carpet or over another mat
- Minimal cushioning, which might not be comfortable for everyone
- Can be too sticky for some, causing minor injuries like toe roll discomfort during poses

User Insights:
Users appreciate its grip and portability, though they note it’s best used over a softer surface. Some have experienced slight fraying on the edges over time, but overall, it’s praised for its durability.

2. Lululemon Unmat

Specs:
- Thickness: 1.5mm
- Weight: 2 lbs (0.9 kg)
- Size: 71” x 26” (180cm x 66cm)
- Price: $48

Pros:
- Stays sticky even with moisture
- Can be folded without causing significant creases
- Suitable for hot yoga practices

Cons:
- Some users report minor creasing, though it's not noticeable during practice

User Insights:
Users find this mat comparable to Lululemon’s regular mats in terms of stickiness. It's a solid choice for those who sweat a lot, though it might develop minor creases.

3. Jade Yoga Voyager

Specs:
- Thickness: 1.6mm
- Weight: 1.5 lbs (0.68 kg)
- Size: 68” x 24” (172cm x 61cm)
- Price: $39.95

Pros:
- Initially feels very sticky

Cons:
- Loses grip significantly once wet
- Users report slipping hands and feet when sweating

User Insights:
Despite high initial expectations due to its sticky feel, many users were disappointed with its performance during sweaty practices.

4. Cotton Yoga/Mysore Rugs

Specs:
- Thickness: Varies (usually around 2-3mm)
- Weight: Approximately 1.5-2 lbs (0.68-0.9 kg)
- Size: Varies, typically around 72” x 24” (183cm x 61cm)
- Price: $40-$80 depending on brand and quality

Pros:
- Becomes grippier as you sweat
- Easily folds and fits into a backpack
- Ideal for layering over another mat

Cons:
- Not supportive on its own, especially on hard surfaces

User Insights:
A great alternative for those who need additional grip when sweating. Best used in combination with another mat for extra support.

5. Manduka Pro Lite

Specs:
- Thickness: 4.7mm
- Weight: 4 lbs (1.8 kg)
- Size: 71” x 24” (180cm x 61cm)
- Price: $92

Pros:
- Good for folding and travel
- Durable and long-lasting

Cons:
- Closed-cell structure doesn’t absorb sweat

User Insights:
While it’s a reliable option for travel, users looking for a mat that absorbs sweat might need to use a towel in combination.

Conclusion

For those who sweat a lot during practice, the Manduka Eko Superlite and Lululemon Unmat stand out as the best options. Both mats maintain their grip well when wet and are designed for travel, making them ideal for yogis on the go. If you're open to alternatives, a cotton yoga rug can also be a great addition to your practice, especially when used over another mat for extra grip. Happy traveling and namaste!