Rated 4.8 (2847 reviews)
Postural Support Undershirt — PSU Series 1 ™
- Structural Realignment
- Thoracic Support
1x Undershirt
2 days/wash
$29.00
$40.00
$29.00/each
POPULAR
2x Undershirt
4 days/wash
$48.00
$80.00
$24.00/each
BEST VALUE
3x Undershirt
6 days/wash
$66.00
$120.00
$22.00/each
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Free Shipping & Returns
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2600+ 5 Star Reviews
❤︎
180-Day Warranty
Before & After
The power of our Postural Support Undershirt
Before
After
Why the PSU Series 1?
Supports The Postural Correction So It Becomes Permanent Faster...
Your skeleton and muscles have spent years holding a collapsed position... The PSU holds your thoracic spine and shoulders in correct alignment passively throughout the day, so the position that the 30-day protocol is teaching gets reinforced continuously — not just during sessions. That's what makes the correction permanent faster.
The 30-Day Structural Reclaim Protocol
The Protocol Roadmap ↓
The BSI Series 1 creates the passive foundation to express healthy posture... But following the protocol does the active work. Together, they address both the passive and active patterns that compress your frame.
Week 1
Foundation Reset
Daily mobility sequences targeting the hip flexors and lower back — the primary drivers of compressed posture from a sedentary lifestyle.
Week 2
Thoracic Activation
Upper back and shoulder opening work that addresses the forward rounding pattern most people develop with years of screen time.
Week 3
Vertical Integration
Chain activation exercises that train your body to hold its corrected position throughout the day.
Week 4 +
Maintenance & Habit Formation
A sustainable weekly routine designed to make your new structural position the default — not something you have to consciously maintain.
Frequently Asked Questions
How long should I wear the PSU?
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Throughout the 30-Day Structural Reclaim Protocol. Wear it daily while your body is learning the new position. Once the protocol is complete and the correct alignment becomes your default, you won't need it to hold the position — your body will.
How long before I notice a structural difference with the PSU?
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Most users notice an immediate difference in how they hold themselves the moment they put it on. Permanent structural change develops progressively throughout the 30-day protocol when worn consistently.
What size should I order?
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Order your usual mens t-shirt size. The PSU is designed to fit snugly but comfortably — not restrictive.
Does it work alongside the BSI & 30-Day Structural Reclaim Protocol?
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Yes — that's exactly what it's designed for. The BSI corrects your foundation from the ground up. The protocol actively rewires the postural pattern. The PSU holds your upper structure in correct alignment passively throughout the day so nothing undoes that work between sessions.
Is shipping free? And how long does shipping even take?
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Free shipping on all orders. 5–9 business days. Tracking link sent when your order ships. The protocol is delivered digitally, usually within minutes of ordering (But please allow up-to 48 hours due to regular maintainance and quality assurance).
What if it doesn't work for me?
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Every order is covered by our 180-Day Money Back Guarantee. If you're not satisfied for any reason, contact us and we'll make it right.