SKU: 43074996872

ISM PN 4.0 Saddle

Sale price$153.00 Regular price$170.00
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Ships within 48 hours · Estimated delivery Sep 15 - Sep 20

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Description

ISM PN 4.0 SaddleThe ISM PN 4. 0 is the newest offering in the Performance Narrow category of saddles. Similar in design to the award winning ISM PN 3. 0, we increased the sit bone contact points 5mm to accommodate a range of pelvic body positions. Rider response told us some cyclists wanted a 125mm saddle to allow for more relaxed pelvis tilt related to road and gravel cycling. Like the other PN saddles, the PN 4. 0 offerings superb thigh and hamstring clearance.

The ISM PN 4.0 is the newest offering in the Performance Narrow category of saddles.  Similar in design to the award-winning ISM PN 3.0, we increased the sit bone contact points 5mm to accommodate a range of pelvic/body positions.  Rider response told us some cyclists wanted a 125mm saddle to allow for more relaxed pelvis tilt related to road and gravel cycling. 

Like the other PN saddles, the PN 4.0 offerings superb thigh and hamstring clearance.  This allows for more rider body movement around the seat and is great for diving into fast corners.

Like all ISM saddles, the PN 4.0 is nose-less and designed to remove pressure from soft tissue, ensuring maximum blood flow, no genital numbness, and a healthier, more enjoyable ride.

This saddle is not recommended for cyclists who ride with a high seat position or those who ride very forward on the extreme front of the saddle (the front arms or the nose of a traditional saddle). The recommended seat height for these saddles calls for a 32-37 degree knee bend for the rider. If you ride with a minimal bend or a straight leg a different ISM saddle is recommended for you.

Key Features

  • 5mm wider than the PN 3.0 to accommodate a greater range of sit bone width
  • Tapered-edge mold design for incredible comfort
  • Auto-racing inspired air vent chassis

 

Commonly Used For

  • Gravel/Road bikes
  • Time Trial bikes

 

Tech Specs

  • Category: Performance Narrow
  • Length: 255mm
  • Width: 125mm
  • Padding: 30-Series Foam
  • Rails: Proprietary Stainless Steel Alloy
  • Colors: Black

Attention:

This saddle is not recommended for cyclists who ride with a high seat position. The recommended seat height for these saddles calls for a 32-37 degree knee bend for the rider. If you ride with a minimal bend or a straight leg a different ISM saddle is recommended for you.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43074996872

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4.2 ★★★★★
Based on 22 reviews
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Nurse Jesica
Natrona Heights, US
★★★★★ 5
My Heels Were in Bad Shape. Like… Really Bad
Color: Gray
These moisturizing heel socks with the gel cushions were honestly a small miracle for me. After recovering from cancer treatments, my skin became extremely dry everywhere, but my heels were the worst. They cracked so deeply they looked like fissures and were even bleeding. I tried lotions and bandages repeatedly with very little progress. A friend suggested I treat my heel like it might have a fungal component, so I applied Lotrimin cream, put these heel socks on, and hoped for the best. Within three days, my heels were fully healed. I completed a 7-day routine, and my feet have never been softer. The silicone gel cushion is comfortable, soothing, and stays in place. I loved it so much that I still treat myself about once a week, even though I really don’t need to anymore. They are also washable. I hand-washed mine in the sink and let them air dry, and they came out looking brand new. If your heels are cracked, painful, or need serious care, I highly recommend these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
B
Verified Purchase
Becky
Phoenix, US
★★★★★ 5
Work well on hubby's heals
Color: Gray
Dr recommended these for hubby's dry cracked heals
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
M
Verified Purchase
Misha
Belleville, US
★★★★★ 3
Ehh. Not for me.
Color: Gray
Foot slides when walking in them. The fit was tighter than lead to believe. It did hold the moisture in but the silicone patch is small
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
J
Verified Purchase
Jackie
Bozeman, US
★★★★★ 5
Healed cracked feet!
Color: Gray
These moisturizing heel socks are great for dry, cracked heels. They’re soft, comfortable, and easy to wear around the house or overnight. I like that the silicone/gel part helps lock in moisture, especially when paired with foot cream or lotion. They fit well without feeling too tight, and having 4 pairs is really convenient. After using them consistently, my heels felt softer and smoother. Great little self-care item, especially if you’re on your feet a lot or struggle with dry skin.
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Reviewed in the United States on May 5, 2026
D
Verified Purchase
Darlene
Birmingham, US
★★★★★ 5
Great stretch.
Color: Gray
My husband has diabetes and these work great on his heels. I was worried they would be too small, he wears a size 12 shoe and they fit great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

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